What is the molar mass of the product formed when 1 mole of Mg reacts with 2 mol

Practice Questions

Q1
What is the molar mass of the product formed when 1 mole of Mg reacts with 2 moles of HCl?
  1. 24.3 g
  2. 36.5 g
  3. 58.5 g
  4. 74.5 g

Questions & Step-by-Step Solutions

What is the molar mass of the product formed when 1 mole of Mg reacts with 2 moles of HCl?
  • Step 1: Identify the reactants in the reaction. We have magnesium (Mg) and hydrochloric acid (HCl).
  • Step 2: Write the balanced chemical equation for the reaction. The equation is Mg + 2HCl → MgCl2 + H2.
  • Step 3: Identify the product formed in the reaction. The product is magnesium chloride (MgCl2).
  • Step 4: Calculate the molar mass of magnesium chloride (MgCl2).
  • Step 5: Find the molar mass of magnesium (Mg), which is 24.3 g/mol.
  • Step 6: Find the molar mass of chlorine (Cl), which is 35.5 g/mol.
  • Step 7: Since there are 2 chlorine atoms in MgCl2, multiply the molar mass of Cl by 2: 2 * 35.5 g/mol = 71.0 g/mol.
  • Step 8: Add the molar mass of magnesium and the total molar mass of chlorine: 24.3 g/mol + 71.0 g/mol = 95.3 g/mol.
  • Step 9: Conclude that the molar mass of the product MgCl2 is 95.3 g/mol.
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