01 moles of a weak acid HA (K_a=2.0 × 10^-6) is dissolved in 1.0 L of 0.1 M HCl solution. The degree of dissociation of HA is \ \ \ \ × 10^-5 (Round…

$\displaystyle 01$ moles of a weak acid HA $\displaystyle \left(K_a=2.0 \times 10^{-6}\right)$ is dissolved in $\displaystyle 1.0$ L of $\displaystyle 0.1$ M HCl solution. The degree of dissociation of HA is \_\_\_\_ $\displaystyle \times 10^{-5}$ (Round off to the Nearest Integer). [Neglect volume change on adding HA. Assume degree of dissociation <<$\displaystyle 1$]