Methanol, ‍ , can be produced in industrial plants by reacting carbon dioxide with hydrogen in the presence of a catalyst. Water is the other product. How many volumes of hydrogen are required for each volume of carbon dioxide when each gas is at the same temperature and pressure?

Respuesta :

Answer:

Volume of hydrogen gas required for each volume of carbon dioxide is 3 times the volume of  carbon dioxide gas.

Explanation:

[tex]CO_2+3H_2\rightarrow CH_3OH+H_2O[/tex]

Volume of the carbon dioxide gas = [tex]V_1[/tex]

Temperature of the carbon dioxide gas = [tex]T_1[/tex]

Pressure of the carbon dioxide gas = [tex]P_1[/tex]

Moles of carbon dioxide gas = [tex]n_1[/tex]

[tex]P_1V_1=n_1RT_1[/tex] (ideal gas equation )

[tex]n_1=\frac{P_1V_1}{RT_1}[/tex]..[1]

Volume of the hydrogen  gas = [tex]V_2[/tex]

Temperature of the hydrogen   gas = [tex]T_2[/tex]

Pressure of the hydrogen   gas = [tex]P_2[/tex]

Moles of hydrogen  gas = [tex]n_2[/tex]

[tex]n_2=\frac{P_2V_2}{RT_2}[/tex]..[2]

According to reaction 1 mole of carbon dioxide reacts with 3 moles of hydrogen gas.

[tex]\frac{n_1}{n_2}=\frac{1}{3}[/tex]

[tex]n_2=3n_1[/tex]

Using above value in [2]

[tex]3n_1=\frac{P_2V_2}{RT_2}[/tex]

[tex]3\times \frac{P_1V_1}{RT_1}=\frac{P_2V_2}{RT_2}[/tex]

Given, [tex]P_1=P_2,T_1=T_2[/tex]

[tex]3\times \frac{P_2V_1}{RT_2}=\frac{P_2V_2}{RT_2}[/tex]

[tex]3V_1=V_2[/tex]

Volume of hydrogen gas = 3 × volume of carbon dioxide gas

Volume of hydrogen gas required for each volume of carbon dioxide is 3 times the volume of carbon dioxide gas.