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The student added 0.0210 mol of pure anhydrous copper(II) sulfate to 25.0 cm3 of deionised water in an open polystyrene cup. Suggest reasons to why the student value for ΔH1 calculated is less accurate than the data book value.

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The OCR A Chemistry specification splits the content into 6 modules:

(1) Development of practical skills in chemistry (2) foundations in chemistry (3) Periodic table and energy (4) Core organic chemistry (5) Physical chemistry and transition metals (6) Organic chemistry and analysis.
 


1. The student added 0.0210 mol of pure anhydrous copper(II) sulfate to 25.0 cm3 of deionised water in an open polystyrene cup. Suggest reasons to why the student value for ΔH1 calculated is less accurate than the data book value.





 
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