Chemical Reactions and Equations class 10 Part-6
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- Опубликовано: 25 май 2021
- Chemical Reactions and Equations class 10 Part-6
#ChemicalReactionsAndEquationsClass10FullChapter
- Double Displacement
- Oxidation & Reduction
𝐓𝐨 𝐉𝐨𝐢𝐧 𝐨𝐮𝐫 𝐅𝐑𝐄𝐄 𝐂𝐨𝐮𝐫𝐬𝐞 𝐂𝐥𝐚𝐬𝐬 𝟏𝟎 𝟐𝟎𝟐𝟏-𝟐𝟐
Class 10 Science 2021-22
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Class 10 Maths 2021-22
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𝐇𝐨𝐦𝐞 𝐒𝐜𝐡𝐨𝐨𝐥 𝐒𝐜𝐢𝐞𝐧𝐜𝐞
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1)The precipitate will be in yellow colour
2)Mg has a protective coating which dosen't allow Mg to react.Thus,Mg has to be rubbed with sand paper before burning
Yes
The colour of the ppt will be bright yellow💛
Yes
Bro not ppt colour it is reaction colour🤣🤣🤣🤣
@@devisriprakashkaripireddi8619 no it is the colour of ppt
Q) lead iodide will be yellow in colour.
Q) magnesium slowly reacts with moist air and forms a white coating MgO on its surface. This hinders the burning of magnesium. Therefore magnesium ribbon should be rubbed with sand paper before burning.
The color of precipitation is bright yellow.
We must rub magnesium ribbon with sand paper because it has a protective layer on it after rubbing , it will be removed and the Oxidation takes place.
We are very thankful for having such a good teacher.
Thank you once again my dearest mam..... 😁😁💐💐💐
Around the Mg ribbon there is a protective covering which will not allow Mg to react. So that we have to rub Mg ribbon to the sand paper
~ The color of the lead iodide is bright yellow.
~ We should rub the Mg ribbon with sandpaper because there is a protective coating covering the Mg ribbon. When you rub the ribbon with sandpaper, the protective coating will be removed. Once the coating is gone we can burn it.
We should rub the mg ribbon with sand paper because there is always protective coating
to covering the mg ribbon. When u will rub the ribbon with sandpaper, on that time the protective coating will be removed mam. Once it gone we can burn it....
😀😃😄😁😆😅🤣😂🙂🙃😉
Woow
Because magnesium is very reactive matal it reacts with oxygen and formed magnesium oxide on outer surface when we buru it it doesn't reacts rapidly so we burn it before burning
Mg ribbon is cotted with protective layer for protection like not to rust and so on .when we remove it with sand paper the thin cotted layer will removed so as it is removed it easily react to burn with Oxygen
Magnesium ribbon should be rubbed on the sand paper before burning because it has a protective covering and to remove that protective covering it's rubbed in the sand paper so that it can burn easily.
Ans:-Magnesium metal is highly reactive.In conditions, it reacts with oxgyen to form magnesium oxide over it's outer layer. To remove this layer and to expose the underlying metal into air, the magnesium ribbon is cleaned by sand paper
Mg is covered with protective coating so it doesn't allow magnesium to react so we want to rub it roughly with sand paper to remove the protective layer.Thus it is removed then the magnesium will react when we burn it
1.The precipitate will be yellow in colour madam
Wonderful explanation madam I am watching your videos from my 9th class madam 😊😊😊
2. Magnesium ribbon has a coating which protects the magnesium ribbon and it doesn't allow magnesium to react
So when we rub it with sand paper the coating will be gone and magnesium ribbon will be burnt
Nice explanation 👌
Hello mam I am so happy mam because I am new student of this channel . (In RUclips i search more videos for chemistry but i didn't understand any thing. if it is my mother tongue also . So finally I get this beautiful and intelligent madem . Now I am able to understand everything in this channel 🙂🙂🙂🙂🙂🙂🙂🎉🤗
1.We should rub the Mg ribbon with sand paper bcoz there is a protective coating covering the Mg ribbon 🎀 with sand paper the protection coating will removed
When the coating was gone we can burn it
2. The colour of lead iodide is bright yellow
Thank you ma'am so much for your hard work and dedication. I don't go for tuitions, I just watch and learn from these videos
Same
Mam Thank you for helping us in this pandemic🙏🏻
Hi
Mg should be rubbed because to remove the protective layer we need to rub the mg with sand paper
Because to remove protective coating on the mg as it does not allow mg to react
Mam, becz to remove the magnesium oxide layer frm the ribbon so we should rub it with a sand paper then it easy to prevent the burning
because there is protective coating around the magnesium ribbon that is not allowed to take take the reaction that is why we have to remove the protective coating by using sand paper
Mam after completing this chapter ,plzz upload most important questions on this chapter for board exams
Will try
Yes mam please make a important question on this chapter
@@makbc5591 hi da
The colour of the ppt is yellow
Magnesium ribbon should be rubbed with sand paper before burning to remove the protective covering
-Color of lead iodide is bright yellow pricipitate
Because there is a protective coating is covering the mg if we rubbed the mg that protective coating will remove than we can burn the mg with another element
The magnesium ribbon as protective coating covering the magnesium ribbon. When you rub the ribbon with sandpaper, the protective coating will be removed once the coating is gone we can burn it with oxygen so the magnesium ribbon has the protective coating so we should rub with sandpaper. If we will not rub the reactants could not occur .
2) what is the colour of the lead iodine ?
Ans. The colour of lead iodine is bright yellow
We have to rub MG with sand paper because
To remove the proactive coating of MG which helps to burn 🔥
Magnesium ribbon must rub with sand paper before heating coz mg ribbon is covered with an protectice layer ,which doesnt allow mg to react so it is must to rub the mg ribbon with sand paper for better rxn ....
We should rub Mg ribbon with sand paper because there is a protective layer which does allows to react with oxyen.
You are the best science teacher I have seen in my life. 26 letters in English alphabet are not enough to describe you ma'am. Thank you❤️ because you made me to love the subject.
thank you and all the best..share videos with your friends also
Definitely
Ma'am, sulphur has valency 2 , then why can't it be Ba2(SO4) ?..can you please clear my doubt.
Because magnesium having protective coating so in the presence of protective coating the reaction cannot work when we rub the magnesium in sand paper it's remove protective coating once protective coating removed then magnesium reaction take place
16:04 the magnesium ribbon is supposed to rub on a rough surface (sandpaper) bcuz, a protective layer of magnesium will be present in the upper part of the magnesium ribbonn😌👀
The magnesium ribbion must be rubbed with sand paper before burning because around the ribbion a protective coating will be formed this protective coating does not allow to magnesium to react in order to remove the protective layer and aloow magnesium to react it should be rubbed with sand paper
Mam in all examples of redox means oxygen was displaced and added with hydrogen, like that in all reactions it takes place mam
Magnesium as protective coating if we remove the protective coating then the reaction takes place for removing protective coating we need to rubber in a rough surface .
As magnesium is reactive it ready reacts wt atmospheric air so a protective layer is applied on it to remove it we need to rub it wt sand paper
When magnesium remain expose to a form a white layer of magnesium oxide on it surface this layer is stable compound prevent buring of magnesium ribbon hence to expose the metal is layer is clean by rubbing with sandpaper
PbI is in the color yellow 💛
Why we should use sand paper because we should remove the protective coating of magnesium
Mam, in double displacement reaction ex 1. In product side ,Why should we write Ba(so4) first, why can't we write NaCl first?
Mam if they give equations out of the syllabus then how we will get to know thair colour.
They will give only from book
1. PbI2 is a Yellow precipitate
2.Magnesium ribbon should be rubbed because The mg is protected by a coting so the coting won't allow mg sheet to burn so we r rubbing mg sheet with sand paper
Keep learning and share with your friends also
Magnesium is more reactive element
It is react with air to produce magnesium oxide layer
That's why before burning should rub on magnesium ribbon with sand paper
The colour of this precipitate reaction will be bright yellow, is it correct mam
Because, around the Mg ribbon there is a protective coating which helps to protect the Mg and it not allows to react the Mg. So we rubbed the Mg with a sandpaper before burning.
Magnesium has protective layer To remove this we have to rub the magnesium by sand paper
Bright yellow colour mam
Mam after watching your explaination Video I am feeling easy to understand the concepts
Mam your Videos are really helpful
Thank you so much mam
Great 👍
Ans-to remove the protective layer of mgo we use sandpaper so that it will burn.
Because there is a protective coating .it won't have any reaction if you burn the magnesium ribbon .So we have to rub it with a sand paper and then we get magnesium oxide
Mam to easily calculate the valency mam. Can u plz teach that because it is getting too confused to us mam. And we understand while u r calculating so it's humble request to teach how to calculate velency plz teach us mam plz
Mam kI +pb(No3)2------pbI2+k(No3)
Gives yellow colour (in the form of precipitate)
Lead iodide's colour is bright yellow colour madam
Your explanation is very much helpful for me during these online schooling..
Thanks a lot for such a wonderful explanation
And also pls upload videos for class 8, my sincere request and I've been asking since many days madam
That's actually for my brother madam...
Pls upload them soon,that would be much more helpful for us...
Thank u madam😊❤🥰
The colour of lead iodide is yellow after mixing the both solution lead iodide is formed
How many more videos to finish this lesson....please tell ...is it large?,or little only their to finish?
To remove the protective coating on the Mg
1)Lead iodide is formed as bright yellow ppt
2)Before burning magnesium ribbon we should rub it with sand paper because magnesium has a protective coating which doesn't allow magnesium to react.
Yes, correct
Right now, I'm in 10th grade. Our science teacher takes inspiration from you, but she isn't able to explain things as well as you do.
Magnesium having a Protective coating
Pb(NO3)+KI→ K(NO3)+PbI2 bright yellow colour we get...., thank you a lot mam for teaching to us ❤️❤️😍😍😊😊😊😊
Hi Mam I am sindhu.M
Led iodide in bright yellow colour mam
I understood very well mam
This exprement you showed in 1 video mam
Because the protection layer is formed on the magnesium(Mg) ribbon it can't provide to Burning so by rubbing with sand paper it will whispering then it react with oxygen(O2)
Because there is a protective coating around it and it doesn't allows it to react with other element. So we have to run it with a sand paper.. Mam if u explain why it doesn't understand mam ua amazing teacher understands so well
... Thanks alottttttttt to maja understand so easlly... ☺☺😇
Thanks.. Share with your Friends...
Q 1.Why magnessium ribbon should be rubbed with sand paper before burning?
Ans:- Becouse it has protecting layer which is actually does not allow to react within oxygen.
Magnesium ribbon should be cleaner in sandpaper before burning because magnesium has a coating layer which doesn't allow magnesium to burning with oxygen that's why to make burn magnesium in air magnesium ribbon should be cleaned.
Mam please tell , Cu + O2 =Cuo in this reaction where removal of Hydrogen take place
Magnesium should rub to sand paper before burning because if we burn without rubbing it didn't show reaction coz it is having layer called protective layer we have to remove this protective layer from rubbing to sand paper then only magnesium reacts with other elements or oxygen 😃
The magnisium ribbon should be rubbed with the sand paper because it contains the protective layer, to remove these protective layer we need to rub the magnesium ribbon with sand paper.
And precipitate formed in the reaction was yellow 🟡 colour precipitat mam. And thanks for your information 😊.
The moment we add both potassium iodine and lead nitrate which are colourless, a chemical reaction occurs and the solution changes into bright yellow colour.
Thus, the colour of PbI2 is Bright yellow!
Around th mg ribbon there will be protective layer.......which will not allow mg to react .......so to remove the protective layer we should rub mg on the hard surface(sand paper)
Protective coating in mg will not allow to react. So, before burning it has to be rubbed with sand paper.
To remove the protect covering we should rubb with sand paper
LIME GREEN IS THE COLOUR OF LEAD IODIDE
Your teaching is amazing👍Thanks mam😊
Thank you.. Watch full video for better understanding..
Keep watching..
Share with your friends..
homeschoolchannels.com/class-10-science-1
Thank you mam@@HomeSchoolChannel
The precipitate colour is bright yellow colour. And tqs for making videos it helps me a lot mam.
Mam what is oxidizing agent and reducing agent???
When we rub with sand paper the protected layer will remove
After that it will react superb
Mam ur teaching is just Amazing 🤩..I enjoy a lott while watching ur videos..Tqsm❤️🙏
The colour of lead iodide precipitate is formed yellow colour
Bcz if we did not rudder means the protective coating do not allow to react so we shld rudder with sand paper thn it will react
because it will have a protective coating on it ,it will not allow Mg to react that's the reason to rub with sand paper
Why we have to rub magnesium ribbon with sand paper before burning?
Because to remove protective coating of magnesium ribbon
We get yellow coloured precipitate when lead nitrate reacts with potassium iodide mam
Mg ribbon must be rubbed with sandpaper before burning because to remove the oxide layer already present on it
Mg is covered with protective coating particles to burn Mg we need to remove that particles so to remove protective coating particles rabbed with sand paper
Because to remove the productive coating of Mg.
Magnesium have the protective coating which not allow the magnesium to react with oxygen so we have to rub it with samdpaper
Because mg have protective layer it's protect a mg ribbon we nicely remove with sand paper on ruf surface that only we could burn the mg with o
PbI2 is Yellow coloured insoluble solid yellow precipitate mam
Am I correct mam
The colour of ppt ,that means lead iodide is yellow 💛 colour
I AM JUST GOING TO SAY THAT U ARE MUCH BETTER THEN MY SCHOOL TEACHER
After these we get yellow beautiful prepicitate😊😊😊😊
Mg rebbon react with air we get MgO
because to remove the protective coating of mg if not it does not react ..
Magnesium has a protective cotin that's why we should rub that otherwise it not allow to burn
Mam don't we want to balance those examples which u gave in part 4 and part 5 video??
You have to
Mam make video mind map for all science class
PbI2 is in yellow color mam
Beacuse the magnesium ribbon has protective coating this doesn't helps to help . in order to remove this we have to clean it with the help of sand paper
Mg is a very reactive element it reacts rapidly with oxygen
Please mention neutralisation reaction and combustion reaction
Very interesting to listen chemistry now madam so nice madam ur teaching i am interesting in chemistry now because of u madam yq for making me understand better madam tq so much madam
keep learning and share videos with your friends also
The Mg ribbon has a outer protective covering
If the presence of this covering it not allows us to burn
So if we rub the Mg ribbon with sand paper it removes the outer covering then we can easily burn the Mg ribbon