A) 6.21
B) 7.21
C) 7.75
D) 8.21
Correct Answer: D
Solution :
\[[{{H}_{3}}{{O}^{+}}]\] means \[[{{H}^{+}}]=6.2\times {{10}^{-9}}\,\,mol/l\] \[pH=-\log \,(6.2\times {{10}^{-9}})=8.21\]You need to login to perform this action.
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