You need to carry out equilibrium calculations for a 0.010 M solution of $NaC_2H_3O_2$ (sodium acetate). Which of the following best describes how you should proceed?
Treat the solution as a 0.010 M $Na^+$ plus 0.010 M $C_2H_3O_2^-$ solution, and based the calculations only on the $c_2H_3O_2^-$, using the $K_a$ value for acetic acid.
Treat the solution as a 0.010 M $Na^+$ plus 0.010 M $C_2H_3O_2^-$ solution, and based the calculations only on the $Na^+$, using the $K_b$ value for sodium ion.
Treat the solution as a 0.010 M $Na^+$ plus 0.010 M $C_2H_3O_2^-$ solution, and based the calculations only on the $C_2H_3O_2^-$, using the $K_b$ value for acetate ion.
Treat the solution as a 0.010 M $Na^+$ plus 0.010 M $C_2H_3O_2^-$ solution, and based the calculations only on the $Na^+$, using the $K_a$ value for sodium ion.
Treat the solution as a 0.010 M $NaC_2H_3O_2$ solution, and based the calculations only on the $K_b$ value for sodium acetate.
Treat the solution as a 0.010 M $NaC_2H_3O_2$ solution, and based the calculations only on the $K_a$ value for acetic acid.