If 50 grams of NaCl is dissolved in 1 liter of solution, what is the molarity? (

Practice Questions

Q1
If 50 grams of NaCl is dissolved in 1 liter of solution, what is the molarity? (Molar mass of NaCl = 58.5 g/mol)
  1. 0.85 M
  2. 1.0 M
  3. 1.5 M
  4. 2.0 M

Questions & Step-by-Step Solutions

If 50 grams of NaCl is dissolved in 1 liter of solution, what is the molarity? (Molar mass of NaCl = 58.5 g/mol)
  • Step 1: Identify the mass of NaCl you have, which is 50 grams.
  • Step 2: Find the molar mass of NaCl, which is given as 58.5 g/mol.
  • Step 3: Calculate the number of moles of NaCl using the formula: Moles = Mass (g) / Molar Mass (g/mol). So, Moles of NaCl = 50 g / 58.5 g/mol.
  • Step 4: Perform the calculation: 50 divided by 58.5 equals approximately 0.854 moles.
  • Step 5: Identify the volume of the solution, which is 1 liter.
  • Step 6: Calculate the molarity using the formula: Molarity (M) = Moles of solute / Volume of solution (L). So, Molarity = 0.854 moles / 1 L.
  • Step 7: Perform the calculation: 0.854 divided by 1 equals 0.854 M.
  • Molarity – Molarity is a measure of the concentration of a solute in a solution, defined as the number of moles of solute per liter of solution.
  • Moles Calculation – Calculating the number of moles from mass and molar mass using the formula: moles = mass (g) / molar mass (g/mol).
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