Problem: What is the balanced chemical equation for the reaction used to calculate Δ H∘f of CaCO3(s)?If fractional coefficients are required, enter them as a fraction (i.e. 1/3). Indicate the physical states using the abbreviation (s), (l), or (g) for solid, liquid, or gas, respectively without indicating allotropes. Use (aq) for aqueous solution.Express your answer as a chemical equation.

FREE Expert Solution

Recall that the standard enthalpy of formation (ΔH˚f) refers to the enthalpy change for the formation of 1 mole of a compound from its elements in their standard states.


This means for CaCO3, the reaction involves the formation of 1 mole of CaCO3 from Ca, C, and O in their standard states

In their standard states, Ca and C both exist as a solid, Ca(s) and C(s), while O exists as a diatomic gas, O2(g).


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Problem Details

What is the balanced chemical equation for the reaction used to calculate Δ Hf of CaCO3(s)?

If fractional coefficients are required, enter them as a fraction (i.e. 1/3). Indicate the physical states using the abbreviation (s), (l), or (g) for solid, liquid, or gas, respectively without indicating allotropes. Use (aq) for aqueous solution.

Express your answer as a chemical equation.

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