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The normality of 5% (w/v) soln. of H3PO4 in the presence of phenolphtalein indicator is-----

The normality of 5% (w/v)  soln. of H3PO4 in the presence of phenolphtalein indicator is-----

Grade:12

1 Answers

Vikas TU
14149 Points
8 years ago

5g H3PO4 is present in 100 ml of soln.

First calculate the moles of H3PO4 then calculate molarity.

i.e M  = n/V (ltrs.)

then Normality = Molarity x Valence factor

                         =  M X 5

 

 

 

 

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