What is the molarity of a solution if 10 g of glucose (C6H12O6) is dissolved in

Practice Questions

Q1
What is the molarity of a solution if 10 g of glucose (C6H12O6) is dissolved in 250 mL of water? (Molar mass = 180 g/mol)
  1. 0.22 M
  2. 0.5 M
  3. 0.75 M
  4. 1 M

Questions & Step-by-Step Solutions

What is the molarity of a solution if 10 g of glucose (C6H12O6) is dissolved in 250 mL of water? (Molar mass = 180 g/mol)
  • Step 1: Find the molar mass of glucose (C6H12O6), which is given as 180 g/mol.
  • Step 2: Calculate the number of moles of glucose by dividing the mass of glucose (10 g) by its molar mass (180 g/mol).
  • Step 3: Use the formula: Moles of glucose = 10 g / 180 g/mol = 0.0556 moles.
  • Step 4: Convert the volume of the solution from milliliters to liters. Since 250 mL = 0.25 L.
  • Step 5: Calculate the molarity using the formula: Molarity = Moles of solute / Volume of solution in liters.
  • Step 6: Substitute the values: Molarity = 0.0556 moles / 0.25 L = 0.222 M.
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