A) 9.13
B) 10.13
C) 11.13
D) 12.13
Correct Answer: C
Solution :
The aqueous solution of ammonia is basic in nature. \[\therefore \] \[[O{{H}^{-}}]=\sqrt{{{K}_{b}}\times C}\] \[=\sqrt{1.8\times {{10}^{-5}}\times 0.1}\] \[=1.341\times {{10}^{-3}}\] \[pOH=-\log [O{{H}^{-}}]\] \[=-\log [1.341\times {{10}^{-3}}]\] \[=2.87\] \[pH=14-pOH\] \[=14-2.87=11.13\]You need to login to perform this action.
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