One way of preparing hydrogen is by decomposition of water:

(a) Would you expect the decomposition to be more complete at equilibrium when it is run at high temperature or when it is run at low temperature? Explain.

(b) According to your answer to (a), would the reaction speed up, slow down, or occur at the same rate as before the temperature was changed? Explain.

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2 H₂0(g) → 2 H₂(g) + O2(g) ▲Erxn = 484 kJ