why can't you do it directly in the volumetric flask? 1) using funnel add sodium carbonate to flask 2) wash the funnel and neck of the flask 3) stopper and invert several times to dissolve 3) top up to the graduated line. why the extra steps with the beaker and watch glass?
because transfering powder directly to a vol. flask would leave some sticking to the neck of the flask, plus it's harder to dissolve it completely there you would have to invert the flask and reopen it several times before reaching desired concentration - this induces errors
The beaker and clock glass is to make the solution. It’s very difficult to make the solution in a volumetric flask. She doesn’t show it in the video, but the process of making the solution is quite tedious…there are plenty of sodium carbonate particles that need to be crushed and stirred and crushed and stirred…. completely impossible in a volumetric flask
There is a way to know the mass required: The molar mass of Na2CO3 is 106 g/moles. In the video 0.05 moles solution is to be made up. Lastly a 250 cm^3 volumetric flask it made up. 106 x 0.05 x 250/1000 = 1.3g
Helpful, but you neglect to mention what the resulting pH should be, because sodium carbonate naturally degrades back into sodium bicarbonate in the presence of airborne CO2 and humidity in as little as a few months. Thus, proper storage and testing are important too.
There is a way to know the mass required: The molar mass of Na2CO3 is 106 g/moles. In the video 0.05 moles solution is to be made up. Lastly a 250 cm^3 volumetric flask it made up. 106 x 0.05 x 250/1000 = 1.3g
Tomorrow is my chemistry practical exam😂😂
Riyal dude
this is awesome!c0uld you do a video on finding the concentration of bleach?
very helpful,thank you,your videos are so detailed you should do more
true
It was really helpful.Love from India
thank you..it's really helpful
Reefing got me here. Needed to see how people dissolve soda ash (Na2CO3) cuz I got a lot of clumps :(. Thanks.
quite good!
Madam please you may send more videos very use full for ous
Thank you
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why can't you do it directly in the volumetric flask?
1) using funnel add sodium carbonate to flask
2) wash the funnel and neck of the flask
3) stopper and invert several times to dissolve
3) top up to the graduated line.
why the extra steps with the beaker and watch glass?
because transfering powder directly to a vol. flask would leave some sticking to the neck of the flask, plus it's harder to dissolve it completely there
you would have to invert the flask and reopen it several times before reaching desired concentration - this induces errors
Are u kidding me u don't get a perfection
The beaker and clock glass is to make the solution. It’s very difficult to make the solution in a volumetric flask. She doesn’t show it in the video, but the process of making the solution is quite tedious…there are plenty of sodium carbonate particles that need to be crushed and stirred and crushed and stirred…. completely impossible in a volumetric flask
what can of chemical can make ssd automatic solution ? please give me result and what it the name of chemical? to Mr/ Ms
Mam my practical exam is tomorrow and I feel very nervous now
What can I do
study
Take leave
Leave it
Why we take 1.3 grm?
It's an arbitrary amount, just note how much you weighed, then dilute later as appropriate.
There is a way to know the mass required:
The molar mass of Na2CO3 is 106 g/moles.
In the video 0.05 moles solution is to be made up.
Lastly a 250 cm^3 volumetric flask it made up.
106 x 0.05 x 250/1000 = 1.3g
Bujhlam. Dhonnobad :)
How do you know it has to be 1.3g? Can it be any value?
Never mind I figured it out!
In this situation, pH will = ????
nice video
why we take 1.33g of Na2co3
Helpful, but you neglect to mention what the resulting pH should be, because sodium carbonate naturally degrades back into sodium bicarbonate in the presence of airborne CO2 and humidity in as little as a few months. Thus, proper storage and testing are important too.
it's amazing wow
goood
so helpful!!! Thank you
Ok 😐
:/
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why we take 1.33g of Na2co3
why we take only 0.5g salt in food ?
There is a way to know the mass required:
The molar mass of Na2CO3 is 106 g/moles.
In the video 0.05 moles solution is to be made up.
Lastly a 250 cm^3 volumetric flask it made up.
106 x 0.05 x 250/1000 = 1.3g
why we take 1.33g of Na2co3
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