Question

Calculate the amount of oxalic acid we need to weigh to prepare M/40 oxalic acid in 250 Ml flask.
A) 0.157g
B)0.315g
C)0.787g
D) 1.57g ​

Answer 1

Answer:

Correct option is

C

Explanation:

Correct option is

C

1.575 g

n. factor for H

2

C

2

O

4

=2

Equivalent weight =

2

M

Normality =

equivalentweight×volume(inmL)

weight×1000

0.1=

(

2

126

)×250

weight×1000

Therefore, weight = 1.575g