Asked Feb 25, 2020

A solution contains 4.25g of ammonia per 250 mL of solution.
Electrical conductivity measurements at 25 C show that 42 %of the
ammonia has reacted with water. Write the equation for this reaction and
calculate the pH of the solution.


Expert Answer

Step 1

The number of moles for a given compound or a molecule refers to the ratio of its mass to the molecular mass. The mathematical relationship is as follows:

Chemistry homework question answer, step 1, image 1

Step 2

The molarity of the given chemical solution is related to the number of moles of the solute and the volume of the solution (in liters) as follows:

Chemistry homework question answer, step 2, image 1

Step 3

The pH of a given solution can be termed as a measure of its basicity or acidity. It is a measure of the concentration of the hydrogen or the hydronium ions which are present in the given solution. More the pH of a given solution, more will be its basicity, and lesser the pH of a given solution, more will be its acidity.


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