What is the mass of solute in grams in a 3 M solution of NaCl in 1 L of solution

Practice Questions

Q1
What is the mass of solute in grams in a 3 M solution of NaCl in 1 L of solution? (2023)
  1. 58.44 g
  2. 174.32 g
  3. 29.22 g
  4. 87.16 g

Questions & Step-by-Step Solutions

What is the mass of solute in grams in a 3 M solution of NaCl in 1 L of solution? (2023)
  • Step 1: Understand that 'M' in 3 M means molarity, which is moles of solute per liter of solution.
  • Step 2: Recognize that a 3 M solution means there are 3 moles of NaCl in 1 liter of solution.
  • Step 3: Find the molar mass of NaCl. Sodium (Na) has a mass of about 22.99 g/mol and Chlorine (Cl) has a mass of about 35.45 g/mol.
  • Step 4: Calculate the molar mass of NaCl: 22.99 g/mol + 35.45 g/mol = 58.44 g/mol.
  • Step 5: Use the formula for mass: mass = moles × molar mass.
  • Step 6: Substitute the values: mass = 3 moles × 58.44 g/mol.
  • Step 7: Calculate the mass: 3 × 58.44 = 175.32 grams.
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