Question

In a $13L$ vessel initially following reaction occur $C\left(s\right)+S_2\left(g\right)\rightleftharpoons C{S}_2\left(g\right)$ by $12gC,64g{S}_2,$ $76gC{S}_2$ at ${1027}^{\circ }C$ temperature then total pressure is:

• A. $200R$
• B. $158R$
• C. $100R$
• D. $79R$

Answer 1

The correct option is A $200R$

Moles of $C=\frac{12}{12}=1$

Moles of $S_2=\frac{64}{64}=1$

Moles of $C{S}_2=\frac{76}{76}=1$

$C_{\left(s\right)}+S_{2\left(g\right)}\rightleftharpoons C{S}_{2\left(g\right)}$
intially of equation $1-n$ $1+n$
total moles $=1-4+1+4=2$
$PV=nRT$
$P=$ $\frac{nRT}{V}=\frac{2\times R\times (1027+273)}{13}$
$P=200R$