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Chemistry
Chemistry
Problem
Which of the following is not a redox reaction? (a)
CaCO
3
→
CaO
+
CO
2
\text{CaCO}_3 \rightarrow \text{CaO} + \text{CO}_2
CaCO
3
→
CaO
+
CO
2
(b)
O
2
+
2
H
2
→
2
H
2
O
\text{O}_2 + 2\text{H}_2 \rightarrow 2\text{H}_2\text{O}
O
2
+
2
H
2
→
2
H
2
O
(c)
Na
+
H
2
O
→
NaOH
+
1
/
2
H
2
\text{Na} + \text{H}_2\text{O} \rightarrow \text{NaOH} + 1/2\text{H}_2
Na
+
H
2
O
→
NaOH
+
1/2
H
2
(d)
MnCl
3
→
MnCl
2
+
1
/
2
Cl
2
\text{MnCl}_3 \rightarrow \text{MnCl}_2 + 1/2 \text{Cl}_2
MnCl
3
→
MnCl
2
+
1/2
Cl
2
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