Question
Question: If in a 100 ml of an aqueous HCl of pH = 1.0, 900 ml of distilled water is added, the pH of the resu...
If in a 100 ml of an aqueous HCl of pH = 1.0, 900 ml of distilled water is added, the pH of the resultant solution will become –
A
1.0
B
4.0
C
2.0
D
7.0
Answer
2.0
Explanation
Solution
pH = 1 means [H+] = 10–1. As 100 cc. is made
1000 cc., dilution is 10 times. Now [H+] = 10–2
or pH = 2