Answer to Question #201516 in General Chemistry for Penelope

Question #201516

What is the concentration of hydronium ions in a solution which is 0.5M with respect to nitrous acid and 0.65M with respect to sodium nitrite? Assume that sodium nitrite is completely ionized.


1
Expert's answer
2021-06-03T05:27:58-0400

solution

concentration of H3O+ of 0.5M Nitrous acid

pH=-log(molarity)

pH=-(log0.5)

=--0.3

pH = 0.3

H3O+=10-pH

=100.3= 1.99


concentration of H3O+ of 0.65

pH=-(log 0.65)

pH=0.187

H3O+=10-0.187

=0.645


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