Question

Following is the composition of a washing soda sample :
Substance
Na₂CO₃
NaHCO₃
NaCl

Molecular Wt.
106.0
84.0
58.5

Mass percent
84.8
8.4
6.8

On complete reaction with excess HCl, one kilogram of the washing soda will evolve:
(a) 9 mol of CO₂
(b) 16 mol of CO₂
(c) 17 mol of CO₂
(d) 18 mol of CO₂

Answer 1

a...Na2CO3

b...106.o

c...sodium...43.38

carbon......11.33

oxygen....45.28

Answer 2

$<b>$
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Following is the composition of a washing soda sample :
Substance
Na₂CO₃
NaHCO₃
NaCl

Molecular Wt.
106.0
84.0
58.5

Mass percent
84.8
8.4
6.8

On complete reaction with excess HCl, one kilogram of the washing soda will evolve:
(a) 9 mol of CO₂
(b) 16 mol of CO₂
(c) 17 mol of CO₂
(d) 18 mol of CO₂

→ [B]


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