Use of amount of substance in relation to masses of pure substances

Medium

Silicon tetrachloride, used in the manufacture of high-purity optical fibres, is produced by reacting silicon with chlorine gas.

The equation for the reaction is:

$Si+2Cl2→SiCl4\text{Si} + 2\text{Cl}_2 \rightarrow \text{SiCl}_4$

Calculate the volume of chlorine gas needed to react completely with $g1.4\text{ g}$ of silicon.

You should calculate:

the number of moles of silicon used
the number of moles of chlorine gas ( $Cl2\text{Cl}_2$ ) that react with $g1.4\text{ g}$ of silicon
the volume of chlorine gas needed.

Relative atomic mass ( $A_r$ ): $Si=28\text{Si} = 28$

The volume of 1 mole of gas = $dm324\text{ dm}^3$

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Use of amount of substance in relation to masses of pure substances Questions