When the hydrogen ion concentration [H+] changes by a factor of 1000, the value of pH of the solution _________ (A) decreases by 3 units (B) decreases by 2 units (C) increases by 3 units (D) increases

Question

When the hydrogen ion concentration [H+] changes by a factor of 1000, the value of pH of the solution _________

(A) decreases by 3 units
(B) decreases by 2 units
(C) increases by 3 units
(D) increases by 1000 units

Prashant Kotian · Accepted Answer

Correct answer: C. (pH)1 = – log C (pH)2 = –log103 C = – [log103 + log C] = – 3 – log C (pH)2 – (pH1) = – 3  Decreased by 3

💡 Solution & Explanation