Question

When the hydrogen ion concentration $\left[ H ^{+}\right]$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 2 units
• D. increases by 1000 units

Answer 1

Answer: (A)

decreases by 3 units

Answer 2

$Δ[H^+]=1000$
$ΔpH=−logΔ[H^+]=−log10^3$
=$−3$
$\text{The Correct Option is (A):}$ $\text{decreases by 3 units}$