Both Caco3 and Cao can be used to neutralise acidic soil. explain the advantage of using Caco3 over Cao in this process.

I dont really understand this question.

Explanation:

Hello there.

The reaction in which calcium carbonate produces calcium oxide and carbon dioxide is: CaCO3 = CaO + CO2.

The breaking down of calcium carbonate to calcium oxide and carbon dioxide is called DECOMPOSITION REACTION. A decomposition reaction is a type of reaction in which a single element is broken down into two or more elemental parts, which are less complex than the parent compound.There are three types of decomposition reaction, these are thermal, photo and electrolytic decomposition reactions.

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Ok then..

Limestone and chalk are both forms of calcium carbonate and dolomite is a mixture of calcium and magnesium carbonates. ... In the chemical industry, large quantities of limestone are heated to ca 1500 K to form calcium oxide, known as quicklime: Water can be added to lime to form calcium hydroxide. Usually CaO is converted to Ca(OH)2 in presence of H2O (it's a quick and exothermic reaction). The formed Ca(OH)2 maybe converted into CaCO3 in presence of CO2. Thus, CaCO3 is dominant species in soil compared to CaO. Best regards Nil...Therefor there can not be same value for CaO and CaCO3..

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be