In the reaction 2naoh+h3po4- na2hpo4+2h2o the equivalent wt of acid is
Answers
Answer:
the equivalent wt of the acid for the given rxn is 49 g eq.
Explanation:
H3PO4 is an acid and the equivalent mass of an acid is calculated by using the formula:
\text{Equivalent mass}=\frac{\text{Molar mass of acid}}{\text{Number of replaceable hydrogen ions}}Equivalent mass=Number of replaceable hydrogen ionsMolar mass of acid
Molar mass of H_3PO_4=[(3\times 1)+31+(4\times 16)]=98g/molH3PO4=[(3×1)+31+(4×16)]=98g/mol
From the given reaction:
H_3PO_4+NaOH\rightarrow Na_2HPO_4+2H_2O
As, the replaceable hydrogen ions in acid is 2, by putting the values in above equation, we get:
Equivalent mass of H_3PO_4=\frac{98}{2}=49g.eq.H3PO4=298=49g.eq.
Hence, The equivalent mass of H_3PO_4H3PO4for the given reaction is 49 g eq.
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Answer:
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