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April 21, 2014

Homework Help: Chemistry

Posted by Meenaakshi on Thursday, March 22, 2012 at 10:52am.

When pure sulfuric acid is dissolved in water,heat is evolved.To a calorimeter containing 300g of water at 20degree C,10.65g of sulfuric acid also added at the same temperature.The change in temperature,which was monitored by a digital probe with negligible heat capacity ceased when it reaches 26.55 degree C.If specific heat of mixture is 4.184 J/g.K and small heat capacity of calorimeter ignored,what is the heat evolved/mole of sulfuric acid? I did this question and I got -75.7kJ/mole. I would like to know if my answer is correct. Thanks

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