Question

The pair of the solutions which have pH value less than 7 :
(1) Solution of washing soda and vinegar
(2) Solution of soap and solution of washing soda
(3) Solution of copper sulphate and solution of washing
soda
(4) Solution of copper sulphate and vinegar
​

Answer 1

Answer:

Since the compound present in solution contains acidic radicals SO  

4

−

​  

 and CH  

3

​  

COO  

−

 ions respectively. Hence, in their solution they will produce acids. Hence, the pH of the solution will be less than 7.

Explanation:

Answer 2

Answer:

Ji aapka question bhot acha h apki trah pr muje nhi ata