How would you balance the following equation: CaO3 --> CaO+CO2?

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How would you balance the following equation: CaO3 --> CaO+CO2?

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Answer 1 · 2016-01-09T18:50:03

You have a typo in your question:

$C a C O_{3} (s) \to C a O (s) + C O_{2} (g) ↑ ⏐$ $CaCO_3(s) rarr CaO(s) + CO_2(g)uarr$

Explanation:

If you HEAT a carbonate sufficiently, the reaction above occurs.

We could reverse this reaction by bubbling carbon dioxide thru calcium hydroxide:

$C a {(O H)}_{2} (a q) + C O_{2} (g) \to C a C O_{3} (s) ⏐ ↓ + H_{2} O (l)$ $Ca(OH)_2(aq) + CO_2(g) rarr CaCO_3(s)darr + H_2O(l)$ .

In fact, this second reaction is a test for carbon dioxide. Carbon dioxide gas should turn limewater ( $C a {(O H)}_{2} (a q)$ $Ca(OH)_2(aq)$ milky (i.e. a precipitate of white $C a C O_{3}$ $CaCO_3$ occurs). When you do this reaction yourself in the lab, you should always do a test first: i.e. treat saturated calcium hydroxide with carbonated water (i.e. water with saturated with $C O_{2}$ $CO_2$ ). What do you see?

Are these reactions balanced? How do you know?

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How would you balance the following equation: CaO3 --> CaO+CO2?

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Explanation:

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