Question

What is molarity of NH3 solution (d = 0.95 g/ml ) which contain 12% NH3 by weight
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Answer 1

Answer:

Molarity = %W/w *sp gravity*10/mol wt.

so,

molarity is 6.705 M

Explanation:

we have a formula that

molarity = %W/w * sp gravity *10 / Molecular wt.

and normality =%W/w * sp gravity *10 / eq. wt

so

Answer 2

The molarity of ammonia is 6.7M.

Given:

Ammonia solution contains 12% ammonia by weight and d is 0.95g/mol.

To find:

The molarity.

Solution:

To determine molarity we have to use the below formula as follows-

Molarity=(%w/w×specific gravity×10)/molecular weight.

We know that

the %w/w of ammonia is 12%.

The specific gravity of ammonia is 0.95 grams/mole.

The molecular weight of ammonia is 17 grams.

$= \frac{12 \times 0.95 \times 10}{17} \\ = 6.7$

The molarity of ammonia is 6.7M.

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