Question

607 g of silver salt of tribasic organic acid was quantitatively reduced to 0.37 g of pure ag. what is the mol.wt of the acid

Answer 1

Ag3A = 3Ag + A

3 moles of Ag combine with 3 moles of A

Mass of Ag = 0.37

Mass of A = 607 - 0.37 = 606.63


Moles of Ag = 0.37/108 = 0.003426


Moles of A = 0.003426/3 = 0.001142


Molar mass of A = 606.63/0.001142 = 531211

A tribasic acid has 3 atom of H



Molar mass of the acid =  3 + 531211 = 531214 g/mol

Answer 2

Explanation:

Ag3A = 3Ag + A

3 moles of Ag combine with 3 moles of A

Mass of Ag = 0.37

Mass of A = 607 - 0.37 = 606.63

Moles of Ag = 0.37/108 = 0.003426

Moles of A = 0.003426/3 = 0.001142

Molar mass of A = 606.63/0.001142 = 531211

A tribasic acid has 3 atom of H

Molar mass of the acid = 3 + 531211 = 531214 g/mol