The decomposition of water can be represented by the chemical equation $$2H_2(g) + O_2(g) \rightarrow 2H_2O(l) \quad \Delta H = -571.8 \text{ kJ mol}^{-1}$$ From this equation, it can be concluded that the formation of two moles of liquid water from gaseous hydrogen and oxygen is an A. exothermic process releasing 571.8 kJ of heat energy. B. exothermic process releasing 1143.6 kJ of heat energy. C. endothermic process absorbing 571.8 kJ of heat energy. D. endothermic process absorbing 1143.6 kJ of heat energy.

SSCE VCE Chemistry Measuring Changes in Chemical Reactions: The decomposition of water can b

The decomposition of water can be represented by the chemical equation $$2H_2(g) + O_2(g) \rightarrow 2H_2O(l) \quad \Delta H = -571.8 \text{ kJ mol}^{-1}$$ From this equation, it can be concluded that the formation of two moles of liquid water from gaseous hydrogen and oxygen is an A - VCE - SSCE Chemistry - Question 13 - 2002 - Paper 1

Question 13

$The-decomposition-of-water-can-be-represented-by-the-chemical-equation--$$2H_2(g)-+-O_2(g)-\rightarrow-2H_2O(l)-\quad-\Delta-H-=--571.8-\text{-kJ-mol}^{-1}$$--From-this-equation,-it-can-be-concluded-that-the-formation-of-two-moles-of-liquid-water-from-gaseous-hydrogen-and-oxygen-is-an--A-VCE-SSCE Chemistry-Question 13-2002-Paper 1.png$

The decomposition of water can be represented by the chemical equation $$2H_2(g) + O_2(g) \rightarrow 2H_2O(l) \quad \Delta H = -571.8 \text{ kJ mol}^{-1}$$ From t... show full transcript

Worked Solution & Example Answer:The decomposition of water can be represented by the chemical equation $$2H_2(g) + O_2(g) \rightarrow 2H_2O(l) \quad \Delta H = -571.8 \text{ kJ mol}^{-1}$$ From this equation, it can be concluded that the formation of two moles of liquid water from gaseous hydrogen and oxygen is an A - VCE - SSCE Chemistry - Question 13 - 2002 - Paper 1

Step 1

exothermic process releasing 571.8 kJ of heat energy.

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Answer

The given reaction indicates the decomposition of water into hydrogen and oxygen gas, releasing 571.8 kJ of heat energy for the formation of two moles of liquid water. Since the reaction releases heat, it is classified as an exothermic process.

exothermic process releasing 571.8 kJ of heat energy.

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