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Factors Influencing RateChemical Kinetics

The reaction between H2(g)H_2(g)andO2(g)O_2(g) is highly feasible (thermodynamically), yet allowing them to stand at room temperature does not form water. Explain.

Expert Answer

Although the reaction is thermodynamically feasible ( ΔG<0\Delta G < 0 ), it is kinetically very slow at room temperature because the activation energy ( EaE_a ) is very high. A spark or catalyst is needed to overcome this barrier.

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