A 1 M solution means the solution has how many moles of solute per liter of solution?

A 1 M solution means the solution has how many moles of solute per liter of solution?

• A. 1 mole per liter
• B. 1 mole per milliliter
• C. 1 gram per liter
• D. 1 particle per liter

Answer: (A)

Molarity is the amount of solute in a given volume of solution, specifically moles per liter. So a 1 M solution contains one mole of solute in every liter of solution, which is about 6.02 x 10^23 solute particles per liter. If it were per milliliter, it would be 1000 times more moles per liter. If it were a gram per liter, that’s a mass concentration and would require the solute’s molar mass to convert to moles. If it were one particle per liter, that reflects an extremely dilute amount far from a mole per liter.

Molarity is the amount of solute in a given volume of solution, specifically moles per liter. So a 1 M solution contains one mole of solute in every liter of solution, which is about 6.02 x 10^23 solute particles per liter.

If it were per milliliter, it would be 1000 times more moles per liter. If it were a gram per liter, that’s a mass concentration and would require the solute’s molar mass to convert to moles. If it were one particle per liter, that reflects an extremely dilute amount far from a mole per liter.