At STP,for complete combustion of 3, g of C_2 | vedclass

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Question

(B) The balanced chemical equation for the combustion of ethane is: $C_2H_6 + \frac{7}{2} O_2 \rightarrow 2 CO_2 + 3 H_2O$ Calculate the moles of $C_2

Vedclass · Accepted Answer

$7.84$

Vedclass · Answer

(B) The balanced chemical equation for the combustion of ethane is: $C_2H_6 + \frac{7}{2} O_2 ightarrow 2 CO_2 + 3 H_2O$ Calculate the moles of $C_2H_6$: $mol 	ext{ of } C_2H_6 = \frac{	ext{mass}}{	ext{molar mass}} = \frac{3\, g}{30\, g/mol} = 0.1\, mol$ From the stoichiometry,$1\, mol$ of $C_2H_6$ requires $3.5\, mol$ of $O_2$: $mol 	ext{ of } O_2 = \frac{7}{2} 	imes 0.1 = 0.35\, mol$ Calculate the volume of $O_2$ at $STP$ $(1\, mol = 22.4\, L)$: $Vol. 	ext{ of } O_2 = 0.35\, mol 	imes 22.4\, L/mol = 7.84\, L$

At $STP$,for complete combustion of $3\, g$ of $C_2H_6$,the required volume of $O_2$ will be - ............. $litre$.

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