a 20% ( w / w ) solution of NaOH is 5m. the density of the solution is
Answers
Answered by
11
use formula only when molarity is given
M = 10dx/ molar mass
here, x is w/w %=20/100 =0.2
d is density
and molar mass=23+16+1=40
5=10d*0.2/40
d = 5*40/2
d= 100 .
if molality is given then first calculate molarity from molality then apply in the formula given above
M = 10dx/ molar mass
here, x is w/w %=20/100 =0.2
d is density
and molar mass=23+16+1=40
5=10d*0.2/40
d = 5*40/2
d= 100 .
if molality is given then first calculate molarity from molality then apply in the formula given above
harsh3374chauhan:
so whenever you get such type of question, just apply the formula
Answered by
29
Answer for this question is 1g.ml^-1
Attachments:
Similar questions