For the reaction A + B ó C + D Assume that the standard change in free energy ha

Question

For the reaction A + B ó C + D

Assume that the standard change in free energy has a positive value.

Changing the conditions of the reaction can alter the value of G.

=> Choose TRUE or FALSE for the following statement:

Increasing [C] and [D] will decrease G

Pyruvic acid has a pKa of 2.5. Its conjugate base is pyruvate. Which form, the acid or the base, dominates at pH 7.4?

neither

Pyruvate

Pyruvic acid

Both

For the reaction A + B ó C + D

Assume that the standard change in free energy has a positive value.

Changing the conditions of the reaction can alter the value of G.

=> Choose TRUE or FALSE for the statement below:

Adding a catalyst will affect G

For the reaction A + B ó C + D

Assume that the standard change in free energy has a positive value.

Changing the conditions of the reaction can alter the value of G.

=> Choose TRUE or FALSE for the statement below:

Increasing [A] and [B] will decrease G

For the reaction A + B ó C + D

Assume that the standard change in free energy has a positive value.

Changing the conditions of the reaction can alter the value of G.

=> Choose TRUE or FALSE for the following statement:

Coupling with ATP hydrolysis will decrease G

Note (explain your answers )

neither

Pyruvate

Pyruvic acid

Both

For the reaction A + B ó C + D

Assume that the standard change in free energy has a positive value.

Changing the conditions of the reaction can alter the value of G.

=> Choose TRUE or FALSE for the statement below:

Adding a catalyst will affect G

For the reaction A + B ó C + D

Assume that the standard change in free energy has a positive value.

Changing the conditions of the reaction can alter the value of G.

=> Choose TRUE or FALSE for the statement below:

Increasing [A] and [B] will decrease G

For the reaction A + B ó C + D

Assume that the standard change in free energy has a positive value.

Changing the conditions of the reaction can alter the value of G.

=> Choose TRUE or FALSE for the following statement:

Coupling with ATP hydrolysis will decrease G

Note (explain your answers )

Explanation / Answer

given statement is false. by changing concentration deltag will not change.

pH = 7.4 means basic in nature so pyruvate is dominant.

Adding a catalyst will affect G false

Increasing [A] and [B] will decrease G false

no . Coupling with ATP hydrolysis will decrease G

usually, Gibbs free energies, reaction enthalpies and reaction entropies are defined as molar quantities - so changing concentrations will not influence the thermodynamic parameters.

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