Concept explainers
Interpretation:
The number of grams of phosphoric acid that are needed to prepare
Concept introduction:
The concentration of a solution is measured in term of normality. Normality is defined the number of equivalents of solute present in one liter of solution. The number of equivalent depends on the acidity or basicity of the substance. The number of equivalents is the product of normality and volume of solution.
Answer to Problem 13PE
The number of grams of phosphoric acid
Explanation of Solution
The given
Since, two hydrogen ions that react with two hydroxide ion and results in the formation of two moles of water. So, there is two
The number of grams is calculated by the formula as given below.
Where,
•
•
It is given that the normality of
The volume of solution is
The conversion of
Therefore, the conversion of
Normality can be expressed in terms of
The equivalent mass is calculated by dividing the molar mass by equivalents per mole.
Therefore,
The molar mass of
The molar mass of hydrogen is
The molar mass of phosphorous is
The molar mass of oxygen is
Substitute the values of molar masses of hydrogen, phosphorous and oxygen in equation (3).
Substitute the values of molar mass and equivalents per mole of
Substitute the values of normality, volume, and equivalent mass of
Therefore, the number of grams of phosphoric acid that are needed to prepare
The number of grams of phosphoric acid
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