Question

5 g of Nacl is dissolved in 1000 g of water if the density of the resulting solution is 0.997 g per ml calculate the molality ,molarity , normality, & mole fraction.​

Answer 1

Correct option is

B

0.2 M

2KMnO

4

+5H

2

C

2

O

4

+6H

+

→2Mn

2+

+10CO

2

+8H

2

O

5×M

KMnO

4

×V

KMnO

4

=2×M

H

2

C

2

O

4

×V

H

2

C

2

O

4

5×M

KMnO

4

× 100 mL =2× 0.5 M × 100 mL

M

KMnO

4

=0.2 M.

The molarity of KMnO

4

solution is 0.2 M.