How Much? The Amount of Chemical Change · Paper 1 — Free Chemistry SL Practice Questions

In the Haber process, nitrogen and hydrogen react according to the equation: $\text{N}_2\text{(g)} + 3\text{H}_2\text{(g)} \rightarrow 2\text{NH}_3\text{(g)}$. A reaction vessel contains $2.0\ \text{mol}$ of $\text{N}_2$ and $8.0\ \text{mol}$ of $\text{H}_2$. What is the maximum amount, in mol, of $\text{NH}_3$ that can be produced?

A student completely neutralizes $0.050\ \text{mol}$ of sulfuric acid with sodium hydroxide according to the equation: $$\text{H}_2\text{SO}_4\text{(aq)} + 2\text{NaOH(aq)} \rightarrow \text{Na}_2\text{SO}_4\text{(aq)} + 2\text{H}_2\text{O(l)}$$ What amount of NaOH, in mol, is required?

In the complete combustion of propane, the equation is: $$\text{C}_3\text{H}_8\text{(g)} + 5\text{O}_2\text{(g)} \rightarrow 3\text{CO}_2\text{(g)} + 4\text{H}_2\text{O(g)}$$ How many moles of $\text{CO}_2$ are produced when $0.20\ \text{mol}$ of $\text{C}_3\text{H}_8$ is burned completely?

In the electrolysis of molten sodium chloride, the overall reaction is: $$2\text{NaCl}(l) \rightarrow 2\text{Na}(l) + \text{Cl}_2(g)$$ When $4.0\ \text{mol}$ of NaCl is completely electrolysed, how many moles of $\text{Cl}_2$ are produced?