1)When Fe 3 O 4 (s) reacts with H 2 (g) to form Fe(s) and H 2 O(g) , 151 kJ of e

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Question

1)WhenFe3O4(s)reacts withH2(g)to formFe(s)andH2O(g),151kJ of energy areabsorbedfor each mole ofFe3O4(s)that reacts.

Write a balanced thermochemical equation for the reaction with an energy term in kJ as part of the equation.

2)WhenHCl(g)reacts withNH3(g)to formNH4Cl(s),176kJ of energy areevolvedfor each mole ofHCl(g)that reacts.

Write a balanced thermochemical equation for the reaction with an energy term in kJ as part of the equation.

3)WhenNO(g)reacts withH2(g)to formN2(g)andH2O(l),376kJ of energy areevolvedfor each mole ofNO(g)that reacts.

Write a balanced thermochemical equation for the reaction with an energy term in kJ as part of the equation.

Explanation / Answer

1) Fe3O4(s) +4 H2(g) -------> 3Fe(aq) +4 H2O, dH = 151 KJ

2) HCl(g) + NH3(g) -----------> NH4Cl(s) , dH = -176 Kj,

3)2 NO (g) + 2H2(g) -----> N2 (g) + 2H2O(l) , dH = -376 x2 = -752 KJ

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1)When CH4(g) reacts with H2O(g) to form H2(g) and CO(g), 206 kJ of energy are a

1)When Fe 3 O 4 (s) reacts with H 2 (g) to form Fe(s) and H 2 O(g) , 151 kJ of e

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1)When Fe 3 O 4 (s) reacts with H 2 (g) to form Fe(s) and H 2 O(g) , 151 kJ of e

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