Question

What is the molarity of a 500.0 ml solution containing 0.75 moles of solute? 1.5 M 0.0015 M 0.015 M 15 M

Answer 1

Volume = 500.0 in liters :

500.0 / 1000 = 0.5 L

Number of moles = 0.75 moles

Molarity = moles of solute / volume in liters

M = 0.75 / 0.5

M = 1.5 M

Answer A

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Answer 2

Answer: 1.5 M

Explanation: Molarity is the property of the aqueous solutions and it can be defined as the number of moles of the solute present divided by the volume of the solution in litres. It is represented by "M" .

Its unit is mol / Litre which is designated as "M"

Thus molarity can be determined of 500 ml solution conatining 0.75 moles of the solute-

M = no. of moles of the solute

Volume of the solution in litres

no of moles = 0.75 moles

Volume of the solution = 500 ml

As we know 1000mL = 1 L , thus 500 ml = 0.5 L

Thus susbtitutng the values in the given equation-

m = 0.75 moles / 0.5 litres = 1.5 mol / L = 1.5 M