Concentration and Molarity

Front

What is the formula for calculating molarity?

Back

Molarity (M) = moles of solute / liters of solution.

Front

What is molarity?

Back

Molarity is a measure of the concentration of a solute in a solution, expressed as moles of solute per liter of solution.

Front

What is a solute?

Back

A solute is a substance that is dissolved in a solvent to form a solution.

Front

What is a solvent?

Back

A solvent is a substance that dissolves a solute, resulting in a solution.

Front

How do you calculate the number of moles from grams?

Back

Number of moles = mass (g) / molar mass (g/mol).

Front

What is the molar mass of NaCl?

Back

The molar mass of NaCl is approximately 58.44 g/mol.

Front

If 36.5 grams of NaCl is dissolved in 125.0 mL of solution, what is the molarity?

Back

5 M NaCl.

Front

How do you convert mL to L?

Back

To convert mL to L, divide the volume in mL by 1000.

Front

What is the molarity of 186.55 g of sucrose in a 250 mL solution?

Back

2.18 M.

Front

What is the molarity of 4 g of NaCl in 3,800 mL of solution?

Back

0.018 M.