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Calculate the pH of the following solutions: a) 0.20 M CH3COOH and 0.30 M Ca(CH3COO)2 b)...

Calculate the pH of the following solutions:
a) 0.20 M CH3COOH and 0.30 M Ca(CH3COO)2
b) 1.5 M HNO2
c) 0.50 M KOH
d) 1.40 N NH3 and 0.010 M Ca(OH)2
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