Calculate the pH of a \( 0.01 \mathrm{M} \mathrm{NaHCO}_{3} \) solution \( \left[\mathrm{K}_{1}\...

Calculate the pH of a \( 0.01 \mathrm{M} \mathrm{NaHCO}_{3} \) solution \( \left[\mathrm{K}_{1}\left(\mathrm{H}_{2} \mathrm{CO}_{3}\right)=4 \times 10^{-7}\right. \), \( \left.K_{2}\left(\mathrm{HCO}_{3}^{-}\right)=4.8 \times 10^{-11}\right] \)
(A) \( 9.38 \)
(B) \( 6.38 \)
(C) \( 8.38 \)
(D) \( 7.38 \)