Question- Using data from Appendix D in the textbook, calculate [OH?] and pH for each of the following solutions.
a) 0.14M NaCN.
b) 8.4×10?2M Na2CO3.
c) A mixture that is 0.12M in NaNO2 and 0.15M in Ca(NO2)2.
I don't know how to reach these answers thus please show the steps, thank you!