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Question: What is the mass of NaCl required to prepare a 0.1 Molar solution ?...

What is the mass of NaCl required to prepare a 0.1 Molar solution ?

Answer

5.844 g of NaCl is required per liter of solution.

Explanation

Solution

To calculate the mass of NaCl needed to prepare a 0.1 M solution:

  1. Find the molar mass of NaCl:

    • Na = 22.99 g/mol
    • Cl = 35.45 g/mol
    • Molar mass of NaCl = 22.99 + 35.45 = 58.44 g/mol

  2. Understand Molarity (M): Molarity is defined as moles of solute per liter of solution. A 0.1 M solution requires 0.1 moles of NaCl per liter.

  3. Calculate the mass of NaCl:

    • Mass = Moles × Molar Mass
    • Mass = 0.1 mol × 58.44 g/mol = 5.844 g

Therefore, 5.844 g of NaCl is needed to prepare a 0.1 M solution.