Question

Chemical bonds (MC) For all of the problems below put the letters corresponding to all the correct answers for each question. Note you will lose credit both for not including a correct answer AND for including an incorrect one. A. Choose the answer or answers that correctly complete the following sentence. An O-P bond in ATP is referred to as a "high energy phosphate bond". Which of the following statements are true about that bond? 1. The bond is a particularly stable bond. 2. The bond is a relatively weak bond. 3. Breaking the bond releases a significant quantity of energy. 4. A relatively small quantity of energy is required to break the bond B.The release of energy during the combustion of ethylene, CH-(g) + 302(g) +2002(g) + 2H2O(g) (exothermic) is due to: 1. Breaking the C-C bond 2. Breaking the C-H bonds 3. Breaking the 0-0 bonds 4. Forming the C-O and O-H bonds C.The figure at the right shows the interaction potential between two molecules (along a particular orientation of the two molecules). The units of rare nm. Two possible states of the molecule are shown: one is labeled E, the other E. Which of the following statements are correct? U 1. When the molecules are in the state En, they are more stable than when they are in the state E. 2. When the molecules are in the state Es, they are more stable than when they are in the state El. 3. When the molecules are separated by a distance of 5 nm, the force between them is attractive. 4. When the molecules are separated by a distance of 2 nm, the force between them is attractive. 5. When the molecules are separated by a distance of 7 nm, the force between them is attractive.

Answer 1

A. 2. The bond is weaker bond. and 4. A relatively small amount of energy is required to break the bond.

ATP releases energy. As O-P bond id weak it is easier to release large amount of energy.

B. Energy id released due to bond formation. Breaking bond requires energy.

4. Forming C-O and O-H bonds releases energy.

C. Lower or the negative the potential energy is it is more stable.

As the potential energy decreases it is attractive force.

2. When the molecules are in E2 state, they are more stable than in E1.

5. When the distance is 7 nm it is attractive force.

Here the plot goes downwards.

At the bottom of the well no attractive or repulsive force exist.