Question

How many moles of ammonia are in 0.40 l of a 6.00 m ammonia solution?

Answer 1

Moles of ammonia is 2.4 moles

Molarity of solution after dilution is 2.4 M

Given:

volume of ammonia solution = 0.40 l

molarity of solution = 6.00 m

To Find:

moles of ammonia

Solution:

1 molar (M) solution will contain 1.0 GMW of a substance dissolved in water to make 1 liter of final solution

M = n / V

M is the molality of the solution that is to be calculated

n is the number of moles of the solute

V is the volume of solution given in terms of litres

n = M x V

= 6 x 0.4

= 2.4 moles

So moles of ammonia are 2.4 moles

molarity of the resulting solution after dilution

M = n/V

= 2.4/1

= 2.4 M

So Molarity after dilution will be 2.4 M

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