CameraIcon

SearchIcon

MyQuestionIcon

2

You visited us 2 times! Enjoying our articles? Unlock Full Access!

Preparations and Uses of Caustic Soda

When N a 2 CO...

Question

When $N a_{2} C O_{3} .10 H_{2} O$ is kept open in air, it:

A

Absorbs moisture

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

Loses water to from an anhydrous salt

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

Loses water to form a monohydrate

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

D

Decomposes to give

C O_{2}

and

N a_{2} O

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C Loses water to form a monohydrate
Washing soda (sodium carbonate decahydrate) loses nine out of its ten molecules of water of crystallization when exposed to the atmosphere.
$N a_{2} C O_{3} .10 H_{2} O (s) \to N a_{2} C O_{3} . H_{2} O (s) + 9 H_{2} O (g)$
Clear glassy crystals fall apart to form a white powder.

Suggest Corrections

thumbs-up

0

Similar questions

Q. A 2 g sample containing

N a_{2} C O_{3}

N a H C O_{3}

loses 0.62 g when heated to

300^{o} C,

the temperature at which

N a H C O_{3}

N a_{2} C O_{3}, C O_{2}

H_{2} O .

What is the percentage of

N a_{2} C O_{3}

in the given mixture.

2.0

g sample containing

{N a}_{2} C O_{3}

N a H C O_{3}

0.248

g when heated to

300

^{o} C

, the temperature at which

N a H C O_{3}

{N a}_{2} C O_{3}, C O_{2}

H_{2} O

%

{N a}_{2} C O_{3}

in the mixture is (as the nearest integer):

Q. When kept in the open air, the crystals of washing soda lose nine molecules of water to form a monohydrate.

N a_{2} C O_{3} . 10 H_{2} O e x p o s e d - --- \to t o a i r N a_{2} C O_{3} . H_{2} O + 9 H_{2} O

This process is called:

Q. A 2.00 g. of sample containing

N a_{2} C O_{3}

N a H C O_{3}

loses 0.248 g when heated to

300^{o} C

, the temperature at which

N a H C O_{3}

decomposes .Find % composition of

N a_{2} C O_{3}

in the mixture ?

K O_{2}

is used in oxygen cylinders in space and submarines beacause it:

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Sodium Hydroxide

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Preparations and Uses of Caustic Soda

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon