
Concept explainers
Interpretation:
The pH of the solution, obtained by dissolving the product, of the given reaction, in water, at a temperature of
Concept introduction:
Equilibrium constant isdefined as the ratio of concentration of products to the concentration of reactants and is expressed as follows:
Molarity is defined as the number of moles of solute dissolved in one litre of solution and is expressed as follows:

Answer to Problem 101AP
Solution: pH is
Explanation of Solution
Given information: The white phosphorous burnt is
The volume of solution is
If the white phosphorus burns in excess of oxygen, the reaction is as follows:
The product formed
The moles formed by
Substitute the values in the above equation:
Thus, the moles of
Molarity of the phosphoric acid solution is calculated as follows:
Substitute
The equilibrium expression for a phosphoric acid solution is as follows:
The value of
The
Substitute
Rearrange the above equation:
This is a quadratic equation, by solving:
The pH of the solution is to be calculated as follows:
Here, the concentration of hydronium ions
The pH of the solution at
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Chapter 24 Solutions
Chemistry
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