Question

find the volume of water to be added to 250ml to 0.05N Na2CO3 to get 0.01N solution​

Answer 1

Answer:

Molarity =

V

ml

n×1000

Molar mass of Na

2

CO

3

=106g/mol

No of moles of Na

2

CO

3

=

106

2.65

=0.025mol

Molarity =

250

0.025×1000

=0.1M

Dilution Formula

M

1

V

1

=M

2

V

2

M

2

=

V

2

M

1

×V

1

M

2

=

500

0.1×10

=0.002M