How many grams of NaOH are present in 250 cm3of 0.5 (M) NaOH solution

1.	How many grams of NaOH are present in 250 cm3of 0.5 (M) NaOH solution ?(A) 10 gm(C) 5 gm(D)4 gm(B)20 gm
Answer» Answer: Molarity= No. ofMoles of solute/VOLUME of the solution in litres. So,given INFO- 0.5(M)=Molarity and volume given as 250cm^3 BTP:- 0.5 =Moles/250×1000 Moles=0.5×25000 =12500 Mass of NaOH= 12500×Molecular mass =12500×40 =5×10^5 =5 GM that is OPTION c. HOPE THIS HELPS..

How many grams of NaOH are present in 250 cm3of 0.5 (M) NaOH solution ?(A) 10 gm(C) 5 gm(D)4 gm(B)20 gm

Answer»

Answer:

Molarity= No. ofMoles of solute/VOLUME of the solution in litres.

So,given INFO- 0.5(M)=Molarity and volume given as 250cm^3

BTP:- 0.5 =Moles/250×1000

Moles=0.5×25000

=12500

Mass of NaOH= 12500×Molecular mass

=12500×40

=5×10^5

=5 GM that is OPTION c.

HOPE THIS HELPS..