If 1 mole of aqueous nitric acid is formed- calculate total heat released - 4NH 3 g - 5O 2 g - 4NO g - 6H 2 O g 2NO g - O 2 g - 2NO 2 g 3NO 2 g - H 2 O g - 2HNO 3 aq - NO g

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Thermal Energy

If 1 mole of ...

Question

If 1 mole of aqueous nitric acid is formed, calculate total heat released :

${4 N H}_{3 (g)} + {5 O}_{2 (g)} \to {4 N O}_{(g)} + {6 H}_{2} O_{g}$

${2 N O}_{g} + O_{2 (g)} \to {2 N O}_{2 (g)}$

${3 N O}_{2 (g)} + H_{2} O_{(g)} \to {2 H N O}_{3 (a q)} + {N O}_{(g)}$

-986 KJ

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-246.5 KJ

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-493 KJ

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4 N H_{3} (g) + 5 O_{2} (g) \to 4 N O (g) + 6 H_{2} O (l) Δ H = - 904 k J . . . (1)

2 N O (g) + O_{2} (g) \to 2 N O_{2} (g) Δ H = - 112 k J . . . (2)

3 N O_{2} (g) + H_{2} O (l) \to 2 H N O_{3} (a q) + N O (g) Δ H = - 140 k J . . . (3)

(i n kJ/mole)

4 N H_{3} (g) + 5 O_{2} (g) \to 4 N O (g) + 6 H_{2} O (l) Δ H = - 904 k J . . . (1)

2 N O (g) + O_{2} (g) \to 2 N O_{2} (g) Δ H = - 112 k J . . . (2)

3 N O_{2} (g) + H_{2} O (l) \to 2 H N O_{3} (a q) + N O (g) Δ H = - 140 k J . . . (3)

(i n kJ/mole)

4 {N H}_{3 (g)} + 5 O_{2 (g)} \Leftrightarrow 4 {N O}_{(g)} + 6 H_{2} O_{(g)}

4 N H_{3} (g) + 5 O_{2} (g) \to 4 N O (g) + 6 H_{2} O (g) (i)

2 N O (g) + O_{2} (g) \to 2 N O_{2} (g) (ii)

3 N O_{2} (g) + H_{2} O \to 2 H N O_{3} (a q) + N O (g) (iii)

N H_{3}

H N O_{3}

4 N H_{3} (g) + 5 O_{2} (g) \to 4 N O (g) + 6 H_{2} O (g) (i)

2 N O (g) + O_{2} (g) \to 2 N O_{2} (g) (ii)

3 N O_{2} (g) + H_{2} O \to 2 H N O_{3} (a q) + N O (g) (iii)

N H_{3}

H N O_{3}

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