What is the concentration in mol/L of a solution made by dissolving 58.5 grams o
Practice Questions
Q1
What is the concentration in mol/L of a solution made by dissolving 58.5 grams of NaCl in 1 liter of water? (Molar mass of NaCl = 58.5 g/mol) (2023) 2023
1 M
0.5 M
2 M
0.25 M
Questions & Step-by-Step Solutions
What is the concentration in mol/L of a solution made by dissolving 58.5 grams of NaCl in 1 liter of water? (Molar mass of NaCl = 58.5 g/mol) (2023) 2023
Step 1: Identify the mass of NaCl you have, which is 58.5 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 = 58.5 g / 58.5 g/mol.
Step 4: Perform the calculation: 58.5 g / 58.5 g/mol = 1 mole of NaCl.
Step 5: Determine the volume of the solution, which is 1 liter of water.
Step 6: Calculate the molarity (concentration) using the formula: Molarity (M) = Moles of solute / Volume of solution (L). So, Molarity = 1 mole / 1 L.
Step 7: Perform the calculation: 1 mole / 1 L = 1 M.
