What are #[HO^-]#, and #[H_3O^+]# in the following solutions....?

Question

#a.# #0.159molL^-1# #HNO_3(aq)#.

#b.# #0.0150molL^-1# #H_2SO__4(aq)#.

#c.# #1.33molL^-1# #KOH(aq)#.

#d.# #4.72xx10^-4molL^-1# #Ca(OH)_2(aq)#.

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Answer 1 · 2017-03-21T19:04:55

All of these are strong acids, OR strong bases..........

And thus #H_3O^+# or #""^(-)OH# are present in stoichiometric amounts.

#a.# #0.159*mol*L^-1# #HNO_3(aq)# is #0.159*mol*L^-1# in #H_3O^+#.

#b.# #0.0150*mol*L^-1# #H_2SO__4(aq)# is #0.0300*mol*L^-1# in #H_3O^+#, i.e. #"sulfuric acid"# is diprotic.

#c.# #1.33*mol*L^-1# #KOH(aq)# is #1.33*mol*L^-1# in #HO^-#.

#d.# #4.72xx10^-4*mol*L^-1# #Ca(OH)_2(aq)# is #9.44xx10^-4*mol*L^-1# in #HO^-#.

All of these species are strong acids OR strong bases, and thus they are stoichiometric in #H_3O^+# or #HO^-#.