Question

0.365g of pure HCL gas is dissolved in 50mL of solution .find molarity

Answer 1

Molarity – number of moles / volume in L

Number of moles = amount in g/ molar mass

= 0.365 g/ 36.5 g/mol

= 0.01 moles

Given that volume = 50 ml  

50 ml *1.0 L/1000 ml  

= 0.050 L

Therefore  

Molarity = 0.01 /0.050= 0.2M