AQA Jan 2013 Paper 2 Q6

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do not write outside the box hydrazine n h decomposes in an exothermic reaction hydrazine also reacts exothermically with hydrogen peroxide when used as a rocket fuel a write an equation for the decomposition of hydrazine into ammonia and nitrogen only mark b state the meaning of the term mean bond enthalpy marks c some mean bond enthalpies are given in the table n h n n n n o h o o mean bond enthalpy kj mol use these data to calculate the enthalpy change for the gas phase reaction between hydrazine and hydrogen peroxide n n o o h h h o h marks turn over wmp jan chem

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