500 ml aqueous solution is prepared by dissolving 2 moles of HCI in water. What will be the molarity of this solution ?

Molarity of a solution can be defined as:

If one mole of solute is dissolved in One-litre solution, then the concentration of the solution has 1 molarity. So from the above definition, formula for finding molarity can be written as:

Molarity = no. of moles ÷ volume of solution in litres

For the given question,

No. of moles of HCL = 2

Volume in mL = 500mL

Volume in litres = 500÷1000 = 0.5L

Molarity = 2 ÷ 0.5 = 4M