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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

The formula of barium molybdate is BaMoO4. Which of the following is the formula of sodium molybdate?

(a) Na4MoO

(b) NaMoO

(c) Na2MoO3

(d) Na2MoO4

(e) Na4MoO4

Interpretation Introduction

Interpretation: The formula of sodium molybdate has to be identified from the given formulas by considering the given formula of barium molybdate.

Concept introduction:

Ionic compounds are formed by the combination of metal or NH4+ and nonmetals or metal and polyatomic ions. Metals have the positive charge (cation) and counterpart has the negative charge (anion).

Formula of a compound is the representation of atoms or polyatoms present in the compound by their respective symbol.     

The charge of barium ion and sodium ion is +2 and +1 respectively.

Explanation

Reason for correct option:

The given formula of barium molybdate is BaMoO4, the charge of barium ion is +2, hence the charge of molybdate ion is -2 (MoO42).

The charge of sodium is +1, therefore, two sodium ions are required to balance the charge of MoO42 ion.

Hence, the formula of the sodium molybdate is Na2MoO4.

Therefore, the correct option is (d).

Reason for incorrect options:

  1. (a) Na4MoO
  2. (b) NaM<

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