Explanation:
1) Answer 2: \(PCl_3+Cl_2\rightarrow PCl_5\)
According to reaction, 1 mol of chlorine gas gives 1 mol of \(PCl_5]\)
Then, 3.00 moles of chlorine gas will give :
\(\frac{1}{1}\times 3.00 mol = 3.00 \text{moles of }PCl_5\)
3.00 moles of \(PCl_5\) are made.
2) Answer 3:\(Fe_2O_3 + 3 CO\rightarrow 2Fe + 3 CO_2\)
Molar ratio is defined ratio of moles of two different substances.
Moles of carbon monoxide gas = 3 mol
Moles of carbon dioxide gas = 3 mol
Molar ratio of \(CO to CO_2=\frac{3 mol}{3 mol}=3:3 = 1:1\)
Molar ratio of \(CO to CO_2\) is 3:3.
3) Answer 4:\(4Fe_2O_3 +3O_2\rightarrow 2Fe_2O_3\)
Moles of oxygen gas =\(\frac{96.0 g}{32 g/mol}=3 mol\)
According to reaction 3 moles of oxygen gas reacts with 4 mol of iron metal.
Then mass of 4 mol of iron metal :4 mol × 55.85 g/mol =223.4 g≈223 g
223 grams of iron was oxidized.
4) Answer 5; \(C_5H_{12} + 8O_2\rightarrow 5CO_2 + 6H_2O\)
According to reaction , 5 moles of carbon dioxide are produced by 1 mol of pentane.
Then 10 moles of carbon dioxide will be produced by:
\(\frac{1}{5}\times 10 mol=2 mol\) of pentane.
2 moles of pentane would need to be supplied.
