Problem: Consider the reactions:A → 2 B; ΔH1A → 3 C; ΔH2What is ΔH for the reaction 2 B → 3 C?

FREE Expert Solution

We are asked what is ΔH for the reaction 2 B → 3 C. 


Modify the equation in such way that it adds up to be the target reaction. 

A → 2 B; ΔH1
A → 3 C; ΔH2

Reaction                                       Modification

2 B →A                                      -Eqn1   [reversed]
A → 3 C                                     + Eqn2   [no change]

__________________  

 2 B → 3 C


90% (414 ratings)
View Complete Written Solution
Problem Details

Consider the reactions:
A → 2 B; ΔH1
A → 3 C; ΔH2
What is ΔH for the reaction 2 B → 3 C?

Learn this topic by watchingHess's Law Concept Videos
All Chemistry Practice Problems Hess's Law Practice Problems
Q.Consider the combustion of liquid methanol, CH3OH(l): CH3OH(l) + 3/2 O2 (g) → CO2(g) + 2 H2O(l), ΔH = –726.5kJBalance the forward reaction with whole-...
Q.From the enthalpies of reaction:H2(g) + F2(g) → 2 HF(g), ΔH = –537 kJC(s) + 2F2(g) → CF4(g), ΔH = –680 kJ2 C(s) + 2 H2(g) → C2H4(g), ΔH = +52.3 kJcalc...
Q.You may want to reference(Pages 183 - 186)Section 5.6 while completing this problem.Given the following data:N2(g) +  O2(g) →  2NO(g)           ΔH = +...
Q.You may want to reference (Pages 184 - 186) Section 5.6 while completing this problem.From the enthalpies of reaction2 C(s) + O2(g) → 2 CO(g), ΔH = -2...
See all problems in Hess's Law

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 Hess's Law concept. You can view video lessons to learn Hess's Law. Or if you need more Hess's Law practice, you can also practice Hess's Law practice problems.