How do you calculate molarity of a solution?

Chemistry

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moles of solute / liters of solution

Molarity (M) is the number of moles of solute per liter of solution:

M = moles of solute / liters of solution

Example: You dissolve 4g of NaOH (molar mass = 40 g/mol) in 500 mL of water.

  1. Convert grams to moles: 4g ÷ 40 g/mol = 0.1 mol
  2. Convert mL to L: 500 mL = 0.5 L
  3. Calculate: M = 0.1/0.5 = 0.2 M

Useful dilution formula: M₁V₁ = M₂V₂ (when diluting a concentrated solution to a lower concentration).

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Molarity (M) is the number of moles of solute per liter of solution: M = moles of solute / liters of solution Example: You dissolve 4g of NaOH (molar mass = 40 g/mol) in 500 mL of water.

How do you calculate molarity of a solution?
Chemistry

This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.

ScanSolve AI Answer
Molarity (M) is the number of moles of solute per liter of solution: M = moles of solute / liters of solution Example: You dissolve 4g of NaOH (molar mass = 40 g/mol) in 500 mL of water. 1. Convert grams to moles: 4g ÷ 40 g/mol = 0.1 mol 2. Convert mL to L: 500 mL = 0.5 L 3. Calculate: M = 0.1/0.5 = 0.2 M Useful dilution formula: M₁V₁ = M₂V₂ (when diluting a concentrated solution to a lower concentration).