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Standard XII

Chemistry

Nucleophilic Substitution in Aryl Halides

11.2grams car...

Question

11.2grams carbon reacts completely with 19.63litre oxygen at ntp.the cooled gases are passed through 2litre of 2.5normal NaOH solution. Calculate concentration of remaining NaOH and sodium carbonate in solution \lbrack CO doesnot react with NaOH under this codition\rbrack

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11.2 g

carbon reacts completely with

19.63 l i t r e

O_{2}

N T P

. The cooled gases are passed through

2 l i t r e

2.5 N N a O H

solution. Calculate concentration of remaining

N a O H

and

N a_{2} C O_{3}

in solution. (

C O

does not react with

N a O H

under these conditions.)

11.2

g carbon reacts completely with

19.63

litres of

O_{2}

at NTP. The cooled gases are passed through

2

litres of

2.5

N

N a O H

solution. The concentration of remaining

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

in solution is (as nearest integer) (

C O

does not react with

N a O H

under these conditions) :

Q. After 11.2 g of carbon reacts with oxygen originally occupying 21.2 lit at

18^{o} C

and 750 torr, the cooled gases are passed thorough 3 litre of 2.5 M

N a O H

solution. Determine the concentration of

N a O H

remaining in solution which is not converted to

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

.
Note :

C O

does not react with

N a O H

under these conditions.

Q. The gases produced when

18

g carbon reacts with

5

L of oxygen at

18

and

5

atm pressure are treated with

0.5

L of

2 M N a O H

. The concentration of sodium carbonate produced by the reaction of

C O_{2}

with

N a O H

is_________. (as nearest integer)

(

C O

does not react under these conditions).

Q. The volume of chlorine gas at

S T P

(in

L i t r e s

) required to completely react with 5 moles of hot and concentrated

N a O H

solution is:

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