Big fan sir. ! Just one suggestion. If you could change the background colour to something slightly less sharp that would be a favour to our eyes. ! Thanks a ton for all your videos.
in last qstion alkalinity is greater than total hardness is it mean there is no NCH present in the water ? but how can it be possible because in qstion cl- and so4-2 ions concentration is given ?
Sir in 3rd question 1st part to find out Hardness u have just multiplied milliequiv to equiv wt of CaCo3,which is 50g. Question is Don't I need to convert the 50g to mg?
In the 2nd question Ca,Mg,Al ions are considered why not Na ion? Okay the answer is due to multivalent cation... But now question is if Fe+3 or +2 .. or other multivalent cation shall we consider them in calculation?
why we r adding alkalinity due to oh- ions because here alkalinity=hardness and oh- ions do not cause for hardness ,in this qstion is it very short .005 but if any qstion if is bigger number then should be count this as alkanility for calculating hardness or not ,and why?
For Hardness, instead of conc of Cl you need to calculate conc of AlCl3 CaCl2 MgCl2 coz CL alone does not cause hardness ..its the Cation ... instead its easy to determine carbonate hardness and we have total hardness....just substract...
@@mechanicstutorials3791 sir but in qstion cl- ions and so4-2 ions are given for a sample then how can it possible that nch is not present in that sample
sir last question calcium carbonate only present,.but it is not equal to calcium hardness,but previously calcium carbonate alkality is taken as calcium hardness,how sir
Your doubt is proper but this is how they have asked in GATE and may be some data they forgot to mention. Otherwise in this case alkalinity should be equal to carbonate hardness.
Because if HCO3 - exists the conc.of oh minus will be very less as oh minus exists at high pH and HCO3 at low pH, thus it can be ignored but to be exact it'll be present , and since the options are large whole numbers it means the examiner wants u to ignore OH
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Big fan sir. ! Just one suggestion. If you could change the background colour to something slightly less sharp that would be a favour to our eyes. !
Thanks a ton for all your videos.
Nice. In short time good explanation sir!👏
sir, ur videos are exceptionally gud ..its really helpfull..can u make videos on rcc and structural analysis?
in last qstion alkalinity is greater than total hardness is it mean there is no NCH present in the water ? but how can it be possible because in qstion cl- and so4-2 ions concentration is given ?
Sir in 3rd question 1st part to find out Hardness u have just multiplied milliequiv to equiv wt of CaCo3,which is 50g.
Question is Don't I need to convert the 50g to mg?
50 mgm caco3 = 1 mili equiv wt of caco3, because 10^3 will be cancel as numerator and denominator.
In the 2nd question Ca,Mg,Al ions are considered why not Na ion?
Okay the answer is due to multivalent cation... But now question is if Fe+3 or +2 .. or other multivalent cation shall we consider them in calculation?
Yes ... I think ... in prev lecture it is mentioned ...
why we r adding alkalinity due to oh- ions because here alkalinity=hardness and oh- ions do not cause for hardness ,in this qstion is it very short .005 but if any qstion if is bigger number then should be count this as alkanility for calculating hardness or not ,and why?
For NCH can we get it from the concentrations of chloride ion?
For Hardness, instead of conc of Cl you need to calculate conc of AlCl3 CaCl2 MgCl2 coz CL alone does not cause hardness ..its the Cation ... instead its easy to determine carbonate hardness and we have total hardness....just substract...
Sir this the bst way to explain 👍
please make lectures on waste water engineering.
Okay! I will do it.
Thankyou sir you realy made the study simpler 😊
Welcome :) Hope you have checked our site too : learn.apseduverse.com
Sir for the last problem, if we want to find NCH, we get negative values
This simply means there is no NCH the total hardness is carbonate only
@@mechanicstutorials3791 sir but in qstion cl- ions and so4-2 ions are given for a sample then how can it possible that nch is not present in that sample
thank you so much
sir why we not take the OH) caustic alkalinity while calculating alkalinity in last question
Sir its very informative but could you please teach it in a more elaborate way? Hardness Alkalinity is not so clearly understood sir.
Sir , why did'nt we took carbonate ions into consideration in calaculating alkalinity
carbonate ions concentration is not given in the question. The reason for that is pH. At a pH below 8.3 only bicarbonates will be present.
sir last question calcium carbonate only present,.but it is not equal to calcium hardness,but previously calcium carbonate alkality is taken as calcium hardness,how sir
Your doubt is proper but this is how they have asked in GATE and may be some data they forgot to mention. Otherwise in this case alkalinity should be equal to carbonate hardness.
APSED Ok ,thank you sir
Thank u sir
why we r not calculating nch by cl- concentration ?
Sir....pleàse explain the sums clearly...I couldn't able to understand some of the steps regarding that equivalent weights
sir, it's hard to understand on CH, NCH and alkalinity relation.Please explain in easy way
Thanku Sir
Please make video on treatment of raw water and waste water
Sure! I will make it.
APSED ty sir
sir why we not take the OH) caustic alkalinity while calculating alkalinity in last question
sir why we not take the OH) caustic alkalinity while calculating alkalinity in last question
because its concentration is insignificant (.1581 mg/L when calculated)
sir why we not take the OH) caustic alkalinity while calculating alkalinity in last question
Because if HCO3 - exists the conc.of oh minus will be very less as oh minus exists at high pH and HCO3 at low pH, thus it can be ignored but to be exact it'll be present , and since the options are large whole numbers it means the examiner wants u to ignore OH