Q. Two bottles A and B contains 1M and 1 m aqueous solution of sulphuric acid respectively
A) A is more concentrated than B
B) B is more concentrated than A
C) Concentration of A is equal to concentration of B
D) It is not possible to compare the concentrations
Explanation
(a)
1M$H_{2}{SO}_{4}$ means 1 mole$H_{2}{SO}_{4}$ in 1000 cc of solution whereas 1m means 1 mole$H_{2}{SO}_{4}$ in 1000 g of water (=1000 cc of water). Total volume of 1 m solution will be > 1000cc due to extra 1 mol$\ H_{2}{SO}_{4}$ . Hence, number of moles per 1000 cc will be less. Thus 1 m is less concentrated than 1 M.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.