Which aqueous solution has higher concentration`:1` molar or 1 molal solution of the same solute ?

Explanation

1 Molar solution has higher concentration than 1 molal solution. A molar solution contains one mole of in one litre of solution while a one molal solution contains one mole of solute in 1000 g of solvent. If density of water is one, then one mole of solute is present in 1000 ml of water in 1 molal solution while one mole of solute is present in less than 1000 mL of water in 1 molar solution (1000 ml solution = amount of solute + amount of solvent). Thus, 1 molar solution is more concentrated.