First slide

PH of strong acids and strong bases

Question

Hydrogen ion concentration in mol/L in a solution of pH = 5.4 will be

Easy

A

$3.98 \times 10^{8}$
B

$3.88 \times 10^{6}$
C

$3.68 \times 10^{8}$
D

$3.98 \times 10^{- 6}$

Solution

$pH = 5.4 = - \log [H^{+}]$
$∴ [H^{+}] = anti \log (- 5.4)$
$= 3.98 \times 10^{- 6}$

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