What mass of H(2)C(2)O(4). 2H(2)O (mol.m...

What mass of `H_(2)C_(2)O_(4). 2H_(2)O (mol.mass=126)` should be dissoved in water to prepare 250mL of centinormal solution which act as a reducing agent?

A

0.63g

B

0.1575g

C

0.126g

D

0.875g

Text Solution

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The correct Answer is:

B

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Knowledge Check

What weight of H_(2)C_(2)O_(4).2H_(2)O (molecular weight = 126 g/mol) should be dissolved to prepare 250 ml of centinormal solution to be used as reducing agent?

A

0.635 g

B

0.1575 g

C

0.1263 g

D

0.835 g

In which reaction H_(2)O_(2) acts as reducing agent ?

A

`Ag_(2)O+H_(2)O_(2)to2Ag+H_(2)O+O_(2)`

B

`2KI+2H_(2)O_(2)to2KIOH+H_(2)O`

C

`PbS+4H_(2)O_(2)toPbSO_(4)+4H_(2)O`

D

`H_(2)O_(2)SO_(2)toH_(2)SO_(4)`

The mass of oxalic acid crystals (H_(2)C_(2)O_(4).2H_(2)O) required to prepare 50 mL of a 0.2 N solution is:

A

(a)4.5 g

B

(b)6.3 g

C

(c )0.63 g

D

(d)0.45 g

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