Chemistry Problem: Moles of Hydrogen Gas Calculation

How many moles of hydrogen gas are needed to produce 0.253 mol of water?

Given:

Moles of water = 0.253 mol

Answer:

The number of moles of hydrogen gas needed are 0.253 mole

When dealing with chemical reactions, it is crucial to understand the concept of mole ratios. In this scenario, we are looking to determine the number of moles of hydrogen gas required to produce 0.253 mol of water.

The balanced chemical equation for the reaction is:

2H2 + O2 -> 2H2O

From the balanced equation, we can see that 2 moles of water are produced from 2 moles of hydrogen gas. Therefore, to calculate the moles of hydrogen gas needed, we can use the formula:

Moles of H2 = (Moles of H2O x Coefficient of H2) / Coefficient of H2O

Given that Moles of H2O = 0.253 mol, we can substitute the values into the formula:

Moles of H2 = (0.253 mol x 2) / 2 = 0.253 mol

Therefore, the number of moles of hydrogen gas needed to produce 0.253 mol of water is 0.253 mole.