What Is the Reaction for the Standard Enthalpy of Formation

question 4

Multiple Choice

What is the reaction for the standard enthalpy of formation for CdSO₄(s) ? (Cd(s) is the stable form of cadmium.)

• A) Cd(NO₃)₂(aq) + H₂SO₄(aq) → 2 HNO₃(aq) + CdSO₄(s)
• B) Cd²⁺ (aq) + 2 SO₄^2- → CdSO₄(s)
• C) Cd(s) + 1/8 S₈ (s) + 2O₂(g) → CdSO₄(s)
• D) CdO(s) + SO₃(l) → CdSO₄(s)
• E) Cd(s) + 1/8 S₈ (s) + 4O(g) → CdSO₄(s)

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Definitions:

Equilibrium Quantity

The quantity of goods or services supplied that is equal to the quantity demanded at the market equilibrium price.

Government Intervention

Actions taken by a government to affect the economy, which can include regulations, subsidies, tariffs, and other forms of involvement.

Market Efficiency

A condition in which all available information is fully reflected in asset prices, making it impossible to consistently achieve higher returns than the overall market.

Equilibrium Price

The price in the market where the amount of products offered matches the amount of products desired.