A solution has pH value of 5. On adding 10 mL of NaCl to it, what will be the pH of the new solution? (a) More than 5 (b) Less than 5 (c) Only seven (d) No change in pH

(d) As NaCl is a neutral solution due to its complete ionization in H2O and has pH = 7. Thus, it will not affect the pH of the solution. Hence, the pH of the solution will remain unaffected.