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

The Correct Option is A

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

Answer 2

The change in hydrogen ion concentration by a factor of 1000 corresponds to a change in pH, which is calculated using the following formula: \[ \Delta pH = -\log[\Delta H^+] = -\log[10^3] = -3 \] This shows that the pH decreases by 3 units, as the hydrogen ion concentration increases by a factor of 1000.