Mg + 2HCl --> MgCl2 + H2 How many grams of H2 are produced when 22.8 grams of Mg react?

Answer 1

Good morning. To solve this problem, we will use three-step stoichiometry.

Step 1: convert the 22.8g of Mg to moles

Step 2: convert moles of Mg to moles of H₂ using the coefficients in the balanced equation

Step 3: convert moles of H₂ to grams of H₂

The problem can be set up as shown below:

22.8g Mg X (1 mol Mg / 24.30g) X (1 mol H₂ / 1 mol Mg) X (2.016g / 1 mol H₂) = ________g H₂