Home
Class 11
CHEMISTRY
A mixture of Na(2)CO(3) and NaHCO(3) hav...

A mixture of `Na_(2)CO_(3)` and `NaHCO_(3)` having a total weight of 100 gm on heating produced 11.2L of `CO_(2)` under STP conditions. The percentage of `Na_(2)CO_(3)` in the mixture is

A

`55.8%`

B

`44.2%`

C

`84%`

D

`16%`

Text Solution

Verified by Experts

The correct Answer is:
D
Let wt of `NaHCO_(3)=x`
`Na_(2)CO_(3)=(100-x)`
`2NaHCO_(3)rarrNa_(2)CO_(3)+H_(2)O+CO_(2)`
2 mol `NaHCO_(3)` gives 22.4 lit `CO_(2)` at STP
`therefore (x)/(84)` mol `NaCHCO_(3)` gives `(22.4)/(2)xx(x)/(84)`
`therefore (22.4)/(2)xx(x)/(84)=11.2impliesx=84`
`therefore Na_(2)CO_(3)=100-84=16implies%=16%`
Promotional Banner

Similar Questions

Explore conceptually related problems

4g of mixture of Na_(2)CO_(3) and NaHCO_(3) on heating liberates 448 ml of CO_(2) at STP. The percentage of Na_(2)CO_(3) in the mixture is

Write the use of Na_(2)CO_(3) in laundries ?

60 gms of limestone on heating produced 22g of CO_(2) . The percentage of CaCO_(3) in limestone is

A mixture of Na_(2)CO_(3) and K_(2)CO_(3) is used as fusion mixture because

The weight of 0.1 mole of Na_(2)CO_(3) is

Aqueous solution of Na_(2)CO_(3) is

19 g of a mixture containing NaHCO_(3) and Na_(2)CO_(3) , on complete heating liberated 1.12 L of CO_(2) at STP. The weight of the remaining solid was 15.9 g. What is the weight (in g) of Na_(2)CO_(3) , in the mixture before heating?