In a reaction, 2 moles of hydrogen react with 1 mole of oxygen to form water. Ho

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Question: In a reaction, 2 moles of hydrogen react with 1 mole of oxygen to form water. How many grams of water are produced? (2020)

Options:

Correct Answer: 18 g

Exam Year: 2020

Solution:

2 moles of H2 and 1 mole of O2 produce 2 moles of H2O. The molar mass of water is 18 g/mol, so 2 moles produce 36 g.

In a reaction, 2 moles of hydrogen react with 1 mole of oxygen to form water. How many grams of water are produced? (2020)

In a reaction, 2 moles of hydrogen react with 1 mole of oxygen to form water. How many grams of water are produced? (2020)

Step 1: Understand the reaction. 2 moles of hydrogen (H2) react with 1 mole of oxygen (O2) to produce water (H2O).
Step 2: Identify how many moles of water are produced. From the reaction, 2 moles of H2 and 1 mole of O2 produce 2 moles of H2O.
Step 3: Find the molar mass of water (H2O). The molar mass is 18 grams per mole.
Step 4: Calculate the total grams of water produced. Since we have 2 moles of H2O, we multiply 2 moles by the molar mass of water: 2 moles * 18 g/mol = 36 grams.
Step 5: Conclude that 36 grams of water are produced from the reaction.

Stoichiometry – Understanding the mole ratios in chemical reactions and how to convert moles to grams using molar mass.
Molar Mass Calculation – Calculating the mass of a substance produced in a reaction based on its molar mass.