Textbook Problem

Silane, SiH₄, is the silicon analogue of methane, CH4. It is prepared industrially according to the following equations:

$\begin{array}{l}\text{Si}\left(s\right)+\text{ 3HC1}\left(g\right)\to {\text{ HSiCl}}_{\text{3}}\left(l\right)+{\text{ H}}_{\text{2}}\left(g\right)\hfill \\ {\text{4HSiCl}}_{\text{3}}\left(l\right)\to {\text{ SiH}}_{\text{4}}\left(g\right)+{\text{ 3SiCl}}_{\text{4}}\left(l\right)\hfill \end{array}$

a. If 156 mL HSiCl₃ (d = 1.34 g/mL) is isolated when 15.0 L HC1 at 10.0 atm and 35°C is used, what is the percent yield of HSiCl₃?

b. When 156 mL HSiCl₃ is heated, what volume of SiH₄ at 10.0 atm and 35°C will be obtained if the percent yield of the reaction is 93.1%?