#
**Problem**: Given the data in the table below, ΔH°rxn for the following reaction is __________ kJ.3NO2(g) + H2O(l) → 2HNO3 (aq) + NO (g)A) 64B) 140C) -140D) -508E) -64

###### FREE Expert Solution

We’re being asked **to determine the standard enthalpy change of reaction**. Recall that **ΔH˚ _{rxn}** can be calculated from the

**enthalpy of formation (ΔH˚**of the reactants and products involved:

_{f})$\overline{){\mathbf{\u2206}}{\mathit{H}}{{\mathbf{\xb0}}}_{\mathbf{r}\mathbf{x}\mathbf{n}}{\mathbf{}}{\mathbf{=}}{\mathbf{}}{\mathbf{\u2206}}{\mathit{H}}{{\mathbf{\xb0}}}_{\mathbf{f}\mathbf{,}\mathbf{}\mathbf{p}\mathbf{r}\mathbf{o}\mathbf{d}\mathbf{u}\mathbf{c}\mathbf{t}\mathbf{s}}{\mathbf{}}{\mathbf{-}}{\mathbf{}}{\mathbf{}}{\mathbf{\u2206}}{\mathit{H}}{{\mathbf{\xb0}}}_{\mathbf{f}\mathbf{,}\mathbf{}\mathbf{r}\mathbf{e}\mathbf{a}\mathbf{c}\mathbf{t}\mathbf{a}\mathbf{n}\mathbf{t}\mathbf{s}}}$

We’re given the **ΔH˚ _{f}** for each species. The chemical equation for that reaction is:

3 NO_{2}(g) + H_{2}O(l) → 2 HNO_{3 }(aq) + NO (g)

This equation is already balanced.

###### Problem Details

Given the data in the table below, ΔH°_{rxn} for the following reaction is __________ kJ.

3NO_{2}(g) + H_{2}O(l) → 2HNO_{3 }(aq) + NO (g)

A) 64

B) 140

C) -140

D) -508

E) -64

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Enthalpy of Formation concept. You can view video lessons to learn Enthalpy of Formation Or if you need more Enthalpy of Formation practice, you can also practice Enthalpy of Formation practice problems .

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Gamble's class at TARLETON.