Q. 0.4 g of a silver salt of a monobasic orgainc acid gave 0.26 g pure silver on ignition. the molecular weight of the acid is (atomic weight of silver=108)
A) 58
B) 37
C) 89
D) 105
Explanation
(a)
Mass of silver salt=0.4 g
Mass of silver =0.26 g
Eq. mass of silver salt/Eq. mass of Ag$= \frac{wt.\ of\ silver\ salt}{wt.of\ silver}$
Eq. mass of silver salt $= \frac{108 \times 0.4}{0.26} = 166$
Eq. mass of acid $= 166 - 108 = 58$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.