Question

30g of urea solution having 100l volume find out molarity​

Answer 1

Answer:

Molarity = 5 × 10^-3

Explanation:

Molar mass of urea = mm = 60 g/mol

Given mass of urea = m = 30 g

Number of moles of urea = m/mm = 30/60 = 0.5 mol

Number of moles = n = 0.5 moles

Volume of solution = v = 100 ltr

Molarity = Number of moles of solute/Volume of solution (in litres)

Molarity = M = n/v = 0.5/100 = 5 × 10^-3