Electrolytes

Q. Calculate the pH of an acidic buffer solution containing $1.2MC{H}_{3}COONa$ and $0.8MC{H}_{3}COOH$.
For acetic acid $K_a=1.8\times {10}^{-5}$

1. 6.89
2. 4.92
3. 5.88
4. 3.66

Q. $100mL$ of a $0.5MC{H}_{3}COONa\left(aq\right)$ is titrated against a $0.5MHCl\left(aq\right)$. Calculate the $pH$ of the solution initially i.e. when no $HCl$ has been added.
Given: $p{K}_a\left(C{H}_{3}COOH\right)=4.74$

1. 6.58
2. 8.24
3. 7.96
4. 9.22

Q. Which of the following is non-electrolyte?

1. $NaCl$
2. $CaC{l}_2$
3. $C_{12}{H}_{22}{O}_{11}$
4. $C{H}_{3}COOH$