# Problem: A mixture of 0.0375 g of hydrogen and 0.0185 mol of oxygen in a closed container is sparked to initiate a reaction.How many grams of water can form? Which reactant is in excess, and how many grams of it remain after the reaction?

###### FREE Expert Solution

We’re being asked a) How many grams of water can form, b) which reactant is in excess, and c) how many grams of excess reactant remain after the reaction

For this problem, we need to do the following steps:

Step 1: Write and balance a chemical equation for the given reaction.

Step 2: Determine the limiting reactant and calculate the moles of H2O formed.

Step 3: Calculate the mass of excess reactant required for the reaction.

Step 4: Calculate the amount of excess remaining.

Step 1: From the problem, the given  reaction is:

2 H2 + O2 →  2 H2O

81% (165 ratings)
###### Problem Details

A mixture of 0.0375 g of hydrogen and 0.0185 mol of oxygen in a closed container is sparked to initiate a reaction.

How many grams of water can form? Which reactant is in excess, and how many grams of it remain after the reaction?