## Chemistry and Chemical Reactivity (9th Edition)

Net ionic reaction: $CH_3CH_2CO_2^-+H_2O\leftrightarrow CH_3CH_2CO_2H+OH^-$ $K=[CH_3CH_2CO_2H][OH^-]/[CH_3CH_2CO_2^-]=K_w/K_a$ $10^{-14}/1.34\cdot10^{-5}=x^2/(0.10-x)$ $x=8.64\cdot10^{-6}\ M=[CH_3CH_2CO_2H]=[OH^-]$ $[CH_3CH_2CO_2^-]\approx 0.10\ M$ $[H_3O^+]=K_w/[OH^-]=1.16\cdot10^{-9}\ M$