What Is the Sign of ΔH (System)and ΔS (System)if a Chemical

question 9

Multiple Choice

What is the sign of ΔH (system) and ΔS (system) if a chemical reaction is spontaneous only at lower temperatures under standard conditions?

• A) ΔH (system)is negative,and ΔS (system)is negative.
• B) ΔH (system)is positive,and ΔS (system)is positive.
• C) ΔH (system)is positive,and ΔS (system)is negative.
• D) ΔH (system)is negative,and ΔS (system)is positive.
• E) None of these

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Definitions:

Ordinal Data

A type of categorical data in which the order of values is significant, but the differences between values are not necessarily consistent.

Interval Data

A type of data measurement that not only keeps order but also has consistent differences between consecutive values, without a true zero point.

Ordinal Data

Data that represent order or ranking among categories but do not quantify the difference between categories, such as educational levels or satisfaction ratings.

Ranking Procedure

A ranking procedure is a statistical method used to assign ranks to various items or entities based on certain attributes or measurements.