Question

Hydrogen gas and oxygen gas are reacted together as shown below to produce water. Calculate the maximum theoretical yield of water if 40g of hydrogen is used and then use your answer to work out the percentage yield if the reaction actually produces 234g of water.

Answer 1

To calculate the maximum theoretical yield of water and the percentage yield in a reaction between hydrogen gas and oxygen gas

Step-by-step explanation:

To calculate the maximum theoretical yield of water, we need to determine the number of moles of hydrogen used and use the stoichiometry of the reaction to convert to moles of water. Then, we can calculate the mass of water using the molar mass of water. Finally, we can calculate the percentage yield using the actual yield and the theoretical yield.

Given that 40g of hydrogen is used and the reaction produces 234g of water, we can follow these steps:

1. Convert the mass of hydrogen to moles using its molar mass of 2.02 g/mol.
2. Use the stoichiometry of the reaction to calculate the moles of water produced.
3. Convert the moles of water to grams using the molar mass of water.
4. Calculate the percentage yield by dividing the actual yield by the theoretical yield and multiplying by 100%.