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Inessa [10]
3 years ago
5

How many atoms of Hydrogen in the products of the following equation?

Chemistry
1 answer:
love history [14]3 years ago
7 0

Answer:

2 atoms of H in the products side

Explanation:

3NO₂ + H₂O → NO + 2HNO₃

In product side: 3 N (1 from NO and 6 from nitric acid), 7 O (6 from nitric acid + 1 from NO), 2 H

In reactant side: 3 N, 7 O (6 from the dioxide + 1 from water) and 2 H

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Consider the halogenation of ethene is as follows:
CH₂=CH₂(g) + X₂(g) → H₂CX-CH₂X(g)
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When bond break it is endothermic and when bond is formed it is exothermic.
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Part a) 
C=C break = +611 kJ
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2 C-I Formed = (2 * -209) = -418 kJ
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Part b)
As we can see that the highest exothermic bond formed is C-F bond so from bond energies we can found that addition of fluoride is the most exothermic reaction
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