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Multiple chemical reaction questions

1. The following is best described by which type of reaction?
CaCO3 --> CaO + CO2
A. decompostion
B. acid-base neutralization
C. single displacement
D. redox
E. double-displacement (metathetical)

2. The following best describes which type of reation?
2Ca + O2 --> 2CaO
a. decomposition
b. acid-base neutralization
c. single displacement
d. redox
e. double-replacement (metathetical)

3. The following best describes which type of reaction?
2Na + 2 HCl (g) --> 2NaCl + H2 (g)
a. decomposition
b. acid base neutralization
c. single displacement
d. redox
e. double displacement (metathetical)

4. What metal will react with water at room temperature an one atmosphere pressure to produce hydrogen gas?
a. mercury (Hg)
b. gold (Au)
c. cesium (Cs)
d. aluminum (Al)

Solution Preview

1. This is a decomposition reaction because CaCO3 decomposes into 2 components. All other reactions are not appropriate.
Reference:
http://en.wikipedia.org/wiki/Calcium_carbonate

2. ...

Solution Summary

The solution provides detailed explanations and references for the questions.

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