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WAEC Chemistry 2020 Paper

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Question : 7

Total: 49

Equal masses of calcium trioxocarbonate(iv) were added to dilute hydrochloric acid at the temperature specified. Under which of the following conditions would the reaction be slowest?

Calcium trioxocarbonate ( iv ) chips a 20°C
CalcIum trioxocarbonate (IV) chips at 40°C
Calcium trioxocarbonate (IV) powder at 20'C
Calcium trioxocarbonate (IV) powder at 40'C

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