Question

What ratio of Na2O/P2O5 is required to form of 1 mole of monosodium to 2 moles of disodium phosphate?

(a) 1.87

(b) 1.62

(c) 1.67

(d) 1.82

I had been asked this question by my school teacher while I was bunking the class.

I'm obligated to ask this question of Inorganic Chemical topic in section Inorganic Chemical Industries of Chemical Technology

Answer 1

Correct choice is (c) 1.67

To explain I would say: Soda ash solution and concentrated H3PO4 are diluted in a batch mixing tank. A 1.67 ratio of  Na2O/P2O5 is required to form of 1 mole of monosodium to 2 moles of disodium phosphate.