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Crank
3 years ago
5

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction

is δh = -100 kj/mol . what is the activation energy for the reverse reaction?
Chemistry
1 answer:
Sindrei [870]3 years ago
5 0

The correct answer is 400 KJ/mol.  

The given reaction:  

NO₂ (g) + CO₂ (g) ⇒ NO (g) + CO₂ (g)

The activation energy or Ea for the reaction is 300 KJ/mol.  

The change in enthalpy for the reaction is, ΔH = -100 KJ/mol, this is for forward reaction, for backward or reverse reaction, ΔH = 100 KJ/mol

The Ea for reverse reaction is calculated by using the formula,  

Ea (forward) + ΔH

= 300 + (+100)

= 400 KJ/mol

Therefore, the activation energy for the reverse reaction is 400 KJ/mol


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This implies that CaCl₂ contains two different elements.

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How many moles are there in 87.2 g of zinc fluoride?
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7 0
2 years ago
A magnesium ion, Mg2+, is formed from a magnesium atom, Mg.
konstantin123 [22]

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The correct row is B.

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5 0
3 years ago
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6 0
2 years ago
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Marta_Voda [28]

Answer : The excess reactant in the combustion of methane in opem atmosphere is O_{2} molecule.

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First we have to calculate the moles of methane.

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From the above chemical reaction, we conclude that

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Therefore, the excess reactant in the combustion of methane in open atmosphere is O_{2} molecule.


6 0
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