All of the following can be used as prim...

All of the following can be used as primary standards in acid-base titration except :

A

oxalic acid

B

potassium hydrogen phthalate

C

sodium carbonate

D

sodium hydroxide

Text Solution

Verified by Experts

The correct Answer is:

d

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All of the following are bases except

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`N_(2)H_(4)`

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`NH_(2)OH`

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Which of the following is not primary standard?

A

`Na_(2)CO_(3).10H_(2)O`

B

Oxalic acid

C

`Na_(2)B_(4)O_(7).10H_(2)O`

D

`NaOH`

The principal reason that solid sodium hydroxide is not used as a primary standard for acid-base titration is that it :

A

absorbes water from air

B

has a low molar mass

C

reacts slowly with many acids

D

ionizes in water

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