Question

For the reaction 2NaOH + H3PO4= Na2HPO4 + 2H2O
the equivalent weight of NaOH is if its molar weight is 'M' g mol-1
(1)M/1
(2)M/2
(3)M/3
(4)2M​

Answer 1

Answer:

M/2

Explanation:

the moles used in this reaction of NaOH

is its 1 mole(n)/ it's stoecheometric coefficient

1/2 =moles

moles = equivalent mass/ molar mass

1/2 = equivalent mass/M

equivalent mass = M/2