First slide

PH scale, PH of strong acids and strong bases

Question

Which of the following is not correct ?

Easy

A

$\large pH\, = \,\frac{1}{{\log [{H^ + }]}}$
B

$pH\, = \,\log (\frac{1}{{{H^ + }}})$
C

$[{H^ + }]\, = \,{10^{ - pH}}$
D

$pH\, = \, - \log [{H^ + }]$

Solution

$P^H=-log[H^+]=log[H^+]^{-1}=log\frac{1}{[H^+]}$
$Also, [H^+]=10^{-P^H}\Rightarrow P^H=-log{[H^+]}$

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