1.

If the heat of formation of NO 2​ is 'x' [1/2N 2(g)​ +O 2(g)​ →NO 2(g)​ ] the heat of reaction N 2(g)​ +O 2(g)​ →2NO (g)​ is y and the heat of reaction 2NO (g)​ +O 2(g)​ →2NO 2​ (g)​ is z, then:

Answer» If the heat of formation of NO
2
​
is 'x' [1/2N
2(g)
​
+O
2(g)
​
→NO
2(g)
​
] the heat of reaction N
2(g)
​
+O
2(g)
​
→2NO
(g)
​
is y and the heat of reaction 2NO
(g)
​
+O
2(g)
​
→2NO
2
​

(g)
​
is z, then:


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