Calculate the Standard Enthalpy Change for the Reaction 2C₈H₁₈(l)+ 17O₂(g) $\rarr$

question 42

Multiple Choice

Calculate the standard enthalpy change for the reaction 2C₈H₁₈(l) + 17O₂(g) $\rarr$ 16CO(g) + 18H₂O(l) .
Given:
2C₈H₁₈(l) + 25O₂(g) $\rarr$ 16CO₂(g) + 18H₂O(l) $\Delta$ H° = -11,020 kJ/mol
2CO(g) + O₂(g) $\rarr$ 2CO₂(g) $\Delta$ H° = -566.0 kJ/mol

• A)10,450 kJ/mol
• B)6,492 kJ/mol
• C)15,550 kJ/mol
• D)-6,492 kJ/mol
• E)-10.450 kJ/mol

Identify and describe the structure and properties of soap and detergent molecules.

Distinguish between different types of chemical reactions involving lipids.

Explain the process and significance of saponification.

Understand the chemical basis of soaps' cleaning action and their interaction with hard water.

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Definitions:

Hygiene Factors

Factors related to the work environment that do not necessarily motivate employees if present but can cause dissatisfaction if missing, as identified in Herzberg's Two-Factor Theory.

Herzberg's Two-Factor Theory

Herzberg's Two-Factor Theory posits that job satisfaction and dissatisfaction arise from two different sets of factors – motivation factors and hygiene factors.

Job Enrichment

The upgrading of a job that makes it more interesting, meaningful, or rewarding and provides long-term motivation.

High Achievement

The attainment of superior levels of performance or accomplishment, often exceeding common standards.