# Problem: Estimate the heat released when ethene (CH2 = CH2) reacts with HBr to give CH3CH2Br. Bond enthalpies are C - H : 412 kJ/mol;    C - C : 348 kJ/mol; C = C : 612 kJ/mol;   C - Br : 276 kJ/mol; Br - Br : 193 kJ/mol;  H - Br : 366 kJ/mol. 1. 58 kJ/mol  2. 1036 kJ/mol 3. 424 kJ/mol 4. 200 kJ/mol 5. 470 kJ/mol

###### FREE Expert Solution
84% (456 ratings)
###### Problem Details

Estimate the heat released when ethene (CH2 = CH2) reacts with HBr to give CH3CH2Br. Bond enthalpies are

C - H : 412 kJ/mol;    C - C : 348 kJ/mol;

C = C : 612 kJ/mol;   C - Br : 276 kJ/mol;

Br - Br : 193 kJ/mol;  H - Br : 366 kJ/mol.

1. 58 kJ/mol

2. 1036 kJ/mol

3. 424 kJ/mol

4. 200 kJ/mol

5. 470 kJ/mol

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 Bond Energy concept. You can view video lessons to learn Bond Energy. Or if you need more Bond Energy practice, you can also practice Bond Energy practice problems.

What is the difficulty of this problem?

Our tutors rated the difficulty ofEstimate the heat released when ethene (CH2 = CH2) reacts wi...as high difficulty.

How long does this problem take to solve?

Our expert Chemistry tutor, Dasha took 6 minutes and 36 seconds to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

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