Answer: 0.31 moles/L
Explanation:
Given:
Mass of NaCl = 9 g
Volume of Solution = 0.50 L
Molarity: ?
The formula used to calculate Molarity is:
Molarity (M) = Number of moles of solute / Volume of solution in litres
We know,
Number of Moles = Given mass / molar mass
So,
Moles of HCl
= 9 g / (58.44 g/mol )
= 0.154 moles
Therefore,
Molarity
= 0.154 moles / 0.50 L
= 0.31 moles/L
