Calculate the ph of a solution that contains 7.8 x 10-2 m oh at 25c a) 1.28 b) 5.11 o c) 12.9 d) 8.89

Answer : The correct option is, (C) 12.9

Explanation:

pOH : It is defined as the negative logarithm of hydroxide ion concentration.

Expression used :

First we have to calculate the pOH.

Now we have to calculate the pH.

Therefore, the pH of a solution is 12.9

consider the reaction below.

 no rx

at 500 k, the reaction is at equilibrium with the following concentrations.

[pci5]= 0.0095 m

[pci3] = 0.020

[ci2] = 0.020 m

what is the equilibrium constant for the given reaction?

0.042

0.42

2.4

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