5 Hess’ law

 

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Oxford Textbook Pages : 138 - 141

CGP Revision Guide Pages : 72 - 73

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Show Specification Ref : 3.2.1g, 3.2.1h

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AQA Jan 2010 Paper 2 Q2 areas outside the box will not be scanned for marking hess s law is used to calculate the enthalpy change in reactions for which it is difficult to determine a value experimentally a state the meaning of the term enthalpy change mark b state hess s law mark c consider the following table of data and the scheme of reactions reaction enthalpy change kj mol hcl g h aq cl aq h g cl g hcl g h g cl g h g cl g h g cl g hr h aq cl aq h g cl g hcl g use the data in the table the scheme of reactions and hess s law to calculate a value for hr marks wmp jan chem
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