The enthalpy change that is observed during a chemical reaction is denoted byAH which equals: H(products) - H(products). H(products) - H(reactants). H(reactants) - H(products). H(reactants) - H(reactants).

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**Understanding Enthalpy Change in Chemical Reactions**

The enthalpy change observed during a chemical reaction is denoted by ΔH, which equals:

- ○ H(products) - H(products)
- ○ H(products) - H(reactants)
- ○ H(reactants) - H(products)
- ○ H(reactants) - H(reactants)

**Explanation:**

The concept of enthalpy change (ΔH) in a chemical reaction is crucial for understanding energy flow. Enthalpy measures the total heat content of a system, and changes occur when reactants are converted into products. To calculate the enthalpy change, subtract the enthalpy of the reactants from that of the products:

ΔH = H(products) - H(reactants)

This calculation helps determine if a reaction is exothermic (releases heat) or endothermic (absorbs heat).
Transcribed Image Text:**Understanding Enthalpy Change in Chemical Reactions** The enthalpy change observed during a chemical reaction is denoted by ΔH, which equals: - ○ H(products) - H(products) - ○ H(products) - H(reactants) - ○ H(reactants) - H(products) - ○ H(reactants) - H(reactants) **Explanation:** The concept of enthalpy change (ΔH) in a chemical reaction is crucial for understanding energy flow. Enthalpy measures the total heat content of a system, and changes occur when reactants are converted into products. To calculate the enthalpy change, subtract the enthalpy of the reactants from that of the products: ΔH = H(products) - H(reactants) This calculation helps determine if a reaction is exothermic (releases heat) or endothermic (absorbs heat).
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