Asked Jan 19, 2020

What is the molarity of a solution of ammonia that is 34% ammonia if the density of the solution is 0.88 g/mL? 


Expert Answer

Step 1


A bottle of concentrated aqueous ammonium is labeled 34% NH3by mass and density = 0.88 g/mL

The formula for molarity is

Chemistry homework question answer, step 1, image 1
Step 2

The mass of the solution is taken as 100 g.  The mass percent of NH3 is 34% by mass.  Therefore, the mass of NH3 is determined as shown below:

Chemistry homework question answer, step 2, image 1
Step 3

The molar mass of Ammonia is 17.032 g/mol.


Chemistry homework question answer, step 3, image 1

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