For each solution, what are the ions that exist in aqueous solution? Specify the concentration of each.

a) 0.25 M (NH4)2SO4
b) 0.056 M HNO3
c) 0.123 K Na2CO3
d) 0.00124 M KClO4

1 Answer
anor277
Oct 5, 2017

a. 2×NH+4, 0.50⋅mol⋅L−1; SO2−4, 0.25⋅mol⋅L−1

Explanation:

b. H3O+, 0.056⋅mol⋅L−1; NO−3, 0.056⋅mol⋅L−1

c. Na+, 0.246⋅mol⋅L−1; CO2−3, 0.123⋅mol⋅L−1

d. K+, 1.24×10−3⋅mol⋅L−1; ClO−4, 1.24×10−3⋅mol⋅L−1

While SOME hydrolysis could occur for the carbonate ion,

CO2−3+H2O(l)⇌HCO−3+HO− we were not given the data to assess the concentration. What data do you need?

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