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Chemistry
Hydroxyl ion concentration of 10-2M HCl is
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Q. Hydroxyl ion concentration of $10^{-2}M\,HCl$ is
Chhattisgarh PMT
Chhattisgarh PMT 2011
A
$1 \times 10^{1} mol\, dm^{-3}$
B
$1 \times 10^{-12} mol\, dm^{-3}$
C
$1 \times 10^{-1} mol\, dm^{-3}$
D
$1 \times 10^{-14} mol\, dm^{-3}$
Solution:
$\left[ H ^{+}\right]\left[ OH ^{-}\right]=10^{-14}\left[10^{-2}\right]\left[ OH ^{-}\right]$
$=10^{-14}\left[ OH ^{-}\right]= \frac{10^{-14}}{10^{-2}}$
$=10^{-12} mol\, dm ^{-3}$