At 25 °C, the mixture contains 20 % of nitrogen dioxide. At 100 °C this has risen to 90%. Is the forward reaction exothermic or endothermic?
Give a reason for your choice.

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Ответ:

rwallacejr803

04.03.2023

Chemistry

Molar mass of NaCl is 23 (Molar mass of sodium) + 35.5 (molar mass of chlorine) = 58.5
therefore 0.8 moles = 0.8 *58.5= 46.8g

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At 25 °C, the mixture contains 20 % of nitrogen dioxide. At 100 °C this has risen to 90%. Is the forward reaction exothermic or endothermic? Give a reason for your choice.