Flag Physical Chemistry> mole concept...
question mark

a sodium hydroxide solution contains 40% by weight of NaOH has specific gravity= 1.5. wat volume of this soln. is required to get 500 ml of .45M SOLUTION

shiwani sharma , 14 Years ago
Grade
anser 1 Answers
vikas askiitian expert

Last Activity: 14 Years ago

40% by weight means , 40gm NaOH in 100 gm solution..

dincity of solution = 1.5                  (given)

volume of sol = 100/1.5  = 66.66ml  = 0.066L                          (dencity = mass/vol)

in 40gm NaOH no of moles = 40/M.wt = 40/40 = 1

molarity of sol = 1/0.066 = 15M/L

now we have M2V1 = M2V2

  15V = 0.45*500

   V =  15ml     ans

approve if u like my ans

Provide a better Answer & Earn Cool Goodies

star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Ask a Doubt

Get your questions answered by the expert for free