Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Question

Given the following thermochemical equations

       2H2(g)          +       O2(g)      →    2H2O(l)         ∆H  =   -571.6 KJ 

    N2O5(g)     +     H2O(i)   →  2HNO3(l)               ∆H  =  -73.7 KJ 

½ N2(g)   +    3/2 O2(g)    +   ½ H2(g)     →  HNO3(l)  ∆H  =  -174.1  KJ 

Calculate ∆H for the formation of one mole of dinitrogen pentoxide from its elements in their stable state at 25oC and 1 atm. 

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