Question

Which of the following statements are true regarding chemical reactions? T = true and F = false.

A) the more negative the ΔG, the further towards completion the reaction will proceed before equilibrium is reached.

B) only a system not at equilibrium can perform work.

C) for most biochemical reactions in a metabolic pathway, equilibrium is rarely reached.

D) in a closed system, a chemical reaction will proceed spontaneously until the reactants and products are in equal concentration.

Answer 1

ANSWER )

A) the more negative the ΔG, the further towards completion the reaction will proceed before equilibrium is reached.

TRUE

EXPLANATION

IF ΔG IS NEGATIVE THE REACTION IS SPONTANEOUS SO IF MORE NEGATIVE  ΔG IS THERE THEN THE REACTION SHOULD BE MORE SPONTANEOUS OR WE CAN SAY IT WILL MOVE FASTER IN THE FORWARD DIRECTION BEFORE IT REACH THE EQUILIBRIUM

B) only a system not at equilibrium can perform work.

TRUE

EXPLANATION

FOR WORK TO BE PERFORMED AN IMBALNACE HAVE TO BE CREATED THAT MEANS FORCES WOULD BE IMBALANCED AND THE SPEED OF SOMTHING OR SOMEWHERE WOULD HAVE TO CHANGE SO SYSTEM IN EQUILIBRIUM WONT PERFORM WORK

C) for most biochemical reactions in a metabolic pathway, equilibrium is rarely reached.

TRUE

EXPLANATION

STSTEM AT EQUILIBRIUM ARE AT MINIMUM G SO CAN NOT DO WORK AS IN THE CASE OF CELL WHERE IF IT REACH TO METABOLIC EQUILIBRIUM IT WILL BE DEAD

D) in a closed system, a chemical reaction will proceed spontaneously until the reactants and products are in equal concentration.

FALSE

EXPLANATION

IN A CLOSE SYSTEM REACTION MAY PROCEED SPONTANEOUSLT BUT THAT DOSENT MEAN IT WILL PROCEED UNTILL REACTANT AND PRODUCT ARE IN EQUAL CONCENTRATION.