Question

34.
a)
What pH do you expect for the following salt solutions and why?
NaCl, CuSO4 , and Na2CO3
b) Alcohol and glucose also contain hydrogen but do not conduct electricity. Why?
OR
a) Why is tartaric acid added into baking soda to get baking powder?
b) Why does tooth decay start when the pH of the mouth is lower than 5.5?
c) How would you say that copper sulphate crystals contain water of crystallisation ?
5​

Answer 1

Answer:

a-12,4,11

b. glucose and alcohol cannat dissosiate when it was added with water, so it's cannot conduct electricity

Answer 2

Answer:

ans a, NaCl is neutral salt.

CuSO4 is acidic salt.

Na2CO3 is basic salt.

ans b, because it doesn't dissociate into ions.

OR

because baking soda is a base which is bitter in taste so to neutralize its effect we add tartaric acid.