Molarity is defined as : (1) The number of moles of solute dissolved in 1 dm3 of the solution (2) The number of moles of solute dissolved in 1 kg of solvent (3) The number of moles of solute dissolved in 1 dm3 of the solvent (4) The number of moles of solute dissolved in 100 mL of solvent

Answer: (1)

Molarity of a given solution which means concentration of the solution. It is defined as the total number of moles of solute per litre of solution. Molarity is also termed as molar concentration. One molar is the molarity of a solution where one gram of solute is dissolved in a litre of solution. The units of molarity are mol dm-3, mol l-1 or one can simply write M.

M = n/V

Where

M = Molality of the solution

n = Number of moles of the solute

V = Volume of solution given in terms of litres.

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