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Chemistry
Chemistry
Problem
A 4.00 g impure sample of
NaHCO
3
\text{NaHCO}_3
NaHCO
3
is heated until all of the
CO
2
\text{CO}_2
CO
2
produced has a mass of 0.88 g.
2
NaHCO
3
(
s
)
→
Na
2
CO
3
(
s
)
+
CO
2
(
g
)
+
H
2
O
(
g
)
2\,\text{NaHCO}_3(\text{s})\rightarrow \text{Na}_2\text{CO}_3(\text{s})+\text{CO}_2(\text{g})+\text{H}_2\text{O}(\text{g})
2
NaHCO
3
(
s
)
→
Na
2
CO
3
(
s
)
+
CO
2
(
g
)
+
H
2
O
(
g
)
What is the percent purity of the
NaHCO
3
\text{NaHCO}_3
NaHCO
3
in the original sample? a)
84
%
84\%
84%
b)
42
%
42\%
42%
c)
68
%
68\%
68%
d)
53
%
53\%
53%
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