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

Question

a) 0.25 M #(NH_4)_2SO_4#
b) 0.056 M #HNO_3#
c) 0.123 K #Na_2CO_3#
d) 0.00124 M #KClO_4#

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Answer 1 · 2017-10-05T04:54:47

#a.# #2xxNH_4^+#, #0.50*mol*L^-1#; #SO_4^(2-),# #0.25*mol*L^-1#

#b.# #H_3O^+#, #0.056*mol*L^-1#; #NO_3^(-),# #0.056*mol*L^-1#

#c.# #Na^+#, #0.246*mol*L^-1#; #CO_3^(2-),# #0.123*mol*L^-1#

#d.# #K^+#, #1.24xx10^-3*mol*L^-1#; #ClO_4^(-),# #1.24xx10^-3*mol*L^-1#

While SOME hydrolysis could occur for the carbonate ion,

#CO_3^(2-) + H_2O(l) rightleftharpoonsHCO_3^(-) + HO^-# we were not given the data to assess the concentration. What data do you need?