Question

learning target
i can convert between moles of one substance and moles of another using the mole ratio
2a. what is the mole ratio for hydrogen gas (h₂) to water (h₂o) in the following chemical reaction?
2 h₂ + 1 o₂ → 2 h₂o
(1 point)
○ 1 h₂/2 h₂o
○ 4 h₂/2 h₂o
○ 2 h₂/2 h₂o
○ 2 h₂/1 h₂o

Explanation:

Step1: Identify coefficients in reaction

Reaction: $2\text{H}_2 + \text{O}_2
ightarrow 2\text{H}_2\text{O}$
Coefficient of $\text{H}_2$: 2; Coefficient of $\text{H}_2\text{O}$: 2

Step2: Form mole ratio

Ratio = $\frac{\text{Coefficient of } \text{H}_2}{\text{Coefficient of } \text{H}_2\text{O}} = \frac{2}{2}$

Answer:

2 H₂/2 H₂O