Potassium superoxide is used to generate oxygen in confined places,such as submarines and spacecraft. 4KO₂(s)+ 2CO₂(g)→ K₂CO₃(s)+ 3O₂(g) What mass of oxygen will be produced for each 1.0 g KO₂ consumed?

Question

Quizplus · Accepted Answer

First, we need to balance the chemical equation, which is already given as: $4 \text{KO}_2(s) + 2 \text{CO}_2(g) \rightarrow 2 \text{K}_2\text{CO}_3(s) + 3 \text{O}_2(g)$.Next, calculate the molar mass of $\text{KO}_2$, which is $K + 2 \times O = 39.1 + 2 \times 16 = 71.1 \text{ g/mol}$.From the balanced equation, 4 moles of $\text{KO}_2$ produce 3 moles of $\text{O}_2$. Therefore, 1 mole of $\text{KO}_2$ would produce $\frac{3}{4}$ moles of $\text{O}_2$.The mass of oxygen produced from 1 mole of $\text{KO}_2$ is $\frac{3}{4} \times 32 \text{ g/mol} = 24 \text{ g}$.For 1.0 g of $\text{KO}_2$, the mass of oxygen produced is $\frac{24 \text{ g}}{71.1 \text{ g/mol}} \times 1.0 \text{ g} \approx 0.34 \text{ g}$.

Potassium Superoxide Is Used to Generate Oxygen in Confined Places,such