What Is the Standard Enthalpy of Formation of CaCO₃(s)

question 28

Multiple Choice

What is the standard enthalpy of formation of CaCO₃(s) ?
CaO(s) + CO₂(g) → CaCO₃(s) ; ΔH° = -179.4 kJ
Substance
ΔH°_f (kJ/mol)
CaO(s)
-634.9
CO₂(g)
-393.5

• A)62.0 kJ
• B)-420.8 kJ
• C)-849.0 kJ
• D)-1207.8 kJ
• E)849.0 kJ

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Definitions:

Null Hypothesis

A statistical presumption positing that there is no notable difference or impact.

Statistical Probability

A measure quantifying the likelihood that an event will occur, calculated based on statistical evidence.

T-test

A technique in statistics for comparing the means of two groups to see if they differ in a statistically significant way.

Alpha

Often referred to as the level of significance in hypothesis testing, it represents the threshold at which the null hypothesis is rejected.