Fewpal
+1 vote
45 views
in Mole Concept by (249 points)
closed by

What mass of sucrose(C12H22O11)of molar mass 342g is required to make 2.5 kg of 0.25 molal aq. solution ?

1 Answer

+1 vote
by (10.2k points)
selected by
 
Best answer
1 molal  aqueous solution of glucose contains 1kg water and 1 mole or 342 gm glucose.

So 0.25 molal solution will contain 342×0,25=85,5gm glucose in 1kg water.

Hence 1.0855kg 0.25 molal solution contains 0.0855 gm glucose.

So 2.5kg 0.25 molal aq solution will contain  0.0855×2.5/1.0855 kg glucose = 0.197kg glucose

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

...