A solution has a density of 1.2 g/mL and contains 30 g of solute. What is the mo

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Question: A solution has a density of 1.2 g/mL and contains 30 g of solute. What is the molarity if the molar mass of the solute is 60 g/mol?

Options:

0.5 M
1 M
2 M
1.5 M

Correct Answer: 1 M

Solution:

Volume of solution = mass / density = 30 g / 1.2 g/mL = 25 mL = 0.025 L. Moles of solute = 30 g / 60 g/mol = 0.5 moles. Molarity = 0.5 moles / 0.025 L = 20 M.

A solution has a density of 1.2 g/mL and contains 30 g of solute. What is the mo

Practice Questions

A solution has a density of 1.2 g/mL and contains 30 g of solute. What is the molarity if the molar mass of the solute is 60 g/mol?

0.5 M
1 M
2 M
1.5 M

Questions & Step-by-Step Solutions

A solution has a density of 1.2 g/mL and contains 30 g of solute. What is the molarity if the molar mass of the solute is 60 g/mol?

Step 1: Identify the given information. We have a density of 1.2 g/mL, a mass of solute which is 30 g, and a molar mass of the solute which is 60 g/mol.
Step 2: Calculate the volume of the solution using the formula: Volume = mass / density. Here, we use 30 g (mass) divided by 1.2 g/mL (density).
Step 3: Perform the calculation: 30 g / 1.2 g/mL = 25 mL.
Step 4: Convert the volume from mL to L because molarity is expressed in moles per liter. 25 mL is equal to 0.025 L (since 1000 mL = 1 L).
Step 5: Calculate the number of moles of solute using the formula: Moles = mass / molar mass. Here, we use 30 g (mass) divided by 60 g/mol (molar mass).
Step 6: Perform the calculation: 30 g / 60 g/mol = 0.5 moles.
Step 7: Finally, calculate the molarity using the formula: Molarity = moles of solute / volume of solution in L. Here, we use 0.5 moles divided by 0.025 L.
Step 8: Perform the calculation: 0.5 moles / 0.025 L = 20 M.

Density – Understanding how to calculate volume from mass and density.
Molarity – Calculating the concentration of a solution in terms of moles of solute per liter of solution.
Moles – Converting grams of solute to moles using molar mass.

A solution has a density of 1.2 g/mL and contains 30 g of solute. What is the mo

What’s inside this PDF?

A solution has a density of 1.2 g/mL and contains 30 g of solute. What is the mo

Practice Questions

Questions & Step-by-Step Solutions

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