Ionic Equilibrium Question 4
Question 4 - 25 January - Shift 2
When the hydrogen ion concentration $[H^{+}]$changes by a factor of 1000 , the value of $pH$ of the solution
(1) increases by 1000 units
(2) decreases by 3 units
(3) decreases by 2 units
(4) increases by 2 units
Show Answer
Answer: (4)
Solution:
Formula: Calculation of pH
$\Delta[H^{+}]=1000$
$ \begin{aligned} & \Delta pH=-\log \Delta[H^{+}]=-\log 10^{3} \\ & =-3 \end{aligned} $
