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Standard XII

Chemistry

Anomalous Behaviour of Fluorine

The gases pro...

Question

The gases produced when 18 g of carbon reacts with 5 litre of oxygen at 18^†extdegree C and 5 atm pressure are treated with 0.5 litre of 2M NaOH. Calculate the concentration of sodium carbonate and sodium bicarbonate produced by the reaction of CO_2 with NaOH. (CO has no reaction under these conditions)

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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).

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.)

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.

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) :

18

C

and

40

O_{2}

on complete reaction gives gaseous mixture which is further treated with

2

moles

N a O H

solution. Calculate the moles of

N a_{2} C O_{3}

formed (assuming no reaction of

N a O H

occurs with

C O

& complete reaction with

C O_{2}

)

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