Which of These Equations Does Not Represent an Oxidation-Reduction Reaction

question 76

Multiple Choice

Which of these equations does not represent an oxidation-reduction reaction?

• A) 3Al + 6HCl → 3H₂ + AlCl₃
• B) 2H₂O → 2H₂ + O₂
• C) 2NaCl + Pb(NO₃)₂ → PbCl₂ + 2NaNO₃
• D) 2NaI + Br₂ → 2NaBr + I₂
• E) Cu(NO₃)₂ + Zn → Zn(NO₃)₂ + Cu

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Definitions:

Significance Testing

A statistical method used to determine if the relationship between variables is due to chance or is statistically significant.

T-Test

A statistical analysis designed to evaluate whether the average values of two groups differ significantly.

Degrees of Freedom

The number of values in a calculation that are free to vary without violating any constraints.

Significant Result

A statistical outcome that indicates a low probability of observing the obtained findings by chance, suggesting the result is not due to random variation.