How to Calculate the Concentration of NH3 in an Aqueous Solution?

Calculation of NH3 Concentration in Aqueous Solution

The concentration of NH3 in the solution is 2.94 x 10^-4 M.

First, we need to calculate the volume of the aqueous solution, which is water. The density of water is 1.00 g/mL, and the mass of water in the sample is 2400 g.

Using the formula: Volume of water = Mass / Density, we have Volume of water = 2400g / 1.00g/mL = 2400mL.

Now, we can calculate the concentration of the ammonia solution using the molarity formula. Molarity is defined as the number of moles of solute present in one liter of volume of solution.

Given that the mass of NH3 is 0.012g and the molar mass of NH3 is 17g/mole, we can plug in these values into the molarity formula:

Molarity = (Mass of NH3 x 1000) / (Molar mass of NH3 x Volume of solution in mL)

Substitute the values: Molarity = (0.012g x 1000) / (17g/mole x 2400mL) = 3.12 mole/L = 2.94 x 10^-4 M

Therefore, the concentration of NH3 in the solution is 2.94 x 10^-4 M.