Given the following data: n2(g)2no(g)++o2(g)o2(g)2n2o(g)→→→2n o(g),2no2(g),2n2(g)+o2(g),δh=+180.7 kjδh=−113.1kjδh=−163.2kj use hess's law to calculate δh for the following reaction: n2o(g)+no2(g)→3no(g)

Answer is: enthalpy is 155.65 kJ.

Reaction 1: N₂(g) + O₂(g) → 2NO(g); ΔrH₁ = 180.7 kJ.

Reaction 2: 2NO(g) + O₂(g) → 2NO₂(g); ΔrH₂ = -113.1 kJ.

Reaction 3: 2N₂O → 2N₂(g) + O₂(g); ∆rH₃ = -163.2 kJ.

Reaction 4: N₂O(g) + NO₂(g) → 3NO(g); ΔrH₄ = ?.

Using Hess's law reaction number 4 is sum of reaction number 1 and half of reaction number 3 minus half of the reaction number 2.

ΔrH₄ = ΔrH₁ + 1/2ΔrH₃ - 1/2ΔrH₂.

ΔrH₄ = 180.7 kJ + 1/2 · (-163.2 kJ) - 1/2 · (-113.1 kJ).

ΔrH₄ = 155.65 kJ.

Hess's law states that the enthalpy change in the chemical reaction is same, whether the reaction takes place in one or several steps. For the given equation, the enthalpy change of overall reaction is 155. 65 kJ.

Given that,

1. The enthalpy change for the reaction between nitrogen and oxygen to form nitrogen oxide is:

2. The enthalpy change in the reaction between nitrogen oxide and oxygen to form nitrogen dioxide will be:

3.  The enthalpy change in breakdown of nitrous oxide to form nitrogen and oxygen:

4. The reaction between nitrous oxide and nitrogen dioxide will from nitrogen oxide as:

Using Hess's law on the fourth reaction, we get sum of first reaction and halved the enthalpy change of second and third reaction.

Therefore, the enthalpy change for the equation will be 155.65 kJ.

To know more about Hess's law, refer to the following link:

link

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.

ill try to . no promises tho.

explanation: