The book Physical Chemistry for Beginners was written by author Charles Marius Van Deventer Here you can read free online of Physical Chemistry for Beginners book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Physical Chemistry for Beginners a good or bad book?
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2 Cal. + (94. 3+ 136. 8) Cal. = + 48. 9 Cal. c. Application of the Law for Predicting the Heat of Reaction. In the above cases the heats of reaction were used for determining the heats of formation ; on the other hand, the former can be calculated if the heats of formation of the substances taking part in the reaction are known. And although it is not always known whether the reaction is actually practicable, still it can be stated in advance how great the heat of reac- tion would be if the rea...ction did take place according to a certain equation. If it is known that H t, S, O 4, Aq = + 210. 9 Cal. And Zn, S, O 4, Aq = + 248. 5 Cal. , then in the reaction Zn (solid) + H 2 SO 4 Aq = ZnSO 4 Aq + H, (gas) a quantity of heat equal to -f- 37. 6 Cal. Will be set free. If it is found that K, Cl (solid) = + 105. 6 Cal. And K, I (solid) = + 80, i Cal. , 66 then in a -reaction which takes place according to the equation KC1 (solid) + I (solid) = KI (solid) + Cl (gas), a quantity of heat equal to 25.
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