Chapter 2, Problem 9TYPSS

During the hydrolysis of ATP, free energy is released when the bond between the anhydride bond between the third and second phosphate is cut with water. What is it about the molecule ATP that makes hydrolysis exergonic? Select ALL that apply. A. Charge Repulsion B. A decrease in Entropy C. Resonance Stabilization D. Abundance of Water in the Cell E. An increase in Entropy

Which statements concerning free energy change are true?a. Free energy change is a measure of the rate of a reaction.b. Free energy change is a measure of the maximum amountof work available from a reaction.c. Free energy change is a constant for a reaction under anyconditions.d. Free energy change is related to the equilibrium constantfor a specific reaction.e. Free energy change is equal to zero at equilibrium.

A reducing chemical reaction: a. reduces the compound to a simpler form b. adds an electron to the substrate c. removes a hydrogen atom from the substrate d. is a catabolic reaction. With reason.

Which of the following correctly explains why the vapor pressure of water has to be included in the calculations? Some of the liquid water evaporates into the gas, and increases the total pressure generated by the trapped gas. As the H2(g) is bubbled up the reaction solution, some of the H2(g) molecules are solubilized by water in the aqueous solution, effectively decreasing the measured pressure above. The pressure contributed by the H2(g) is greater than the measured total pressure because of the contribution of partial pressure of water vapor. The pressure exerted by the evolved H2(g) is reduced because of the co-presence of water vapor, thus Pwater vapor has to be added to Pdry gas.   Overview of the experiment:

is this correct?

For the reaction A → B at 298 K, the change in enthalpy is −7 kJ · mol−1and the change in entropy is −25 J · K−1 · mol−1. Is the reaction spontaneous? If not, should the temperature be increased or decreased to make the reaction spontaneous?

Determine the direction that each of the reactions will progress. Assume that the reactants and products are present in equimolar amounts. The standard free energy of hydrolysis of ATP is - 30.5 kJ/mol. fructose + ATP fructose 6-phosphate + ADP The standard free energy of hydrolysis for fructose 6-phosphate is -15.9 kJ/mol. 3-phosphoglycerate + ATP 1,3-bisphosphoglycerate + ADP The standard free energy of hydrolysis for 1,3-bisphosphoglycerate is -49.3 kJ/mol. creatine + ATP creatine phosphate + ADP The standard free energy of hydrolysis for creatine phosphate is -43.0 kJ/mol.

Some cool enzyme (CE) catalyzes the conversion of compound F to compound A. Which of the following must be true of CE? Choice 1 of 4: CE can facilitate conversion of compound A into compound F. Choice 2 of 4: CE binds more tightly to the substrate F than to the product A. Choice 3 of 4: CE decreases the energy of the transition state between compounds F and A. Choice 4 of 4: CE facilitates net conversion of F to A whenever F is present.

which of the following are true regarding chemical equilibrium (choose all that are true)  a. chemical equilibrium only occurs if the ΔH is very large and negative b. the rate of the forward reaction is the same as the back reaction  c. there is an equal amount of products and reactants  d. the ΔH and Ea  are relatively small