CHEM0010 - IONS EXAM QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS LATEST UPDATE
How are E and ΔG related in an equation?
ΔG = - n x F x E.
n is moles of electrons.
F is Faraday's constant.
E is Ecell.
What powers processes in a cell?
ATP hydrolysis.
What does thermodynamics describe?
The changes in the form of energy when a reaction occurs.
E.g. converting chemical energy to heat.
What does kinetics describe?
How quickly or slowly a reaction or equilibrium occurs.
What does an equilibrium describe?
Reactions in which the reactants and products coexist.
, What powers ATP synthesis?
The protons trying to achieve equilibrium but never achieving it.
What is Kc? Show how Kc would be calculate for this reaction:
aA + bB ⇌ cC + dD
The equilibrium constant of a given reaction at a given pressure and temperature.
Kc = ([C]^c x [D]^d)/([A]^a x [B]^b).
What does a large and small Kc mean in terms of whether the equilibrium leans towards reactants or
products? How does Kc relate to ΔG?
A large Kc means there is more product present. This means ΔG is negative as the reaction occurs
spontaneously.
A small Kc means there is more reactant present. This means ΔG is positive as the reaction does not
occur spontaneously.
What affects Kc and Kp?
Only temperature.
What is the function of the reaction quotient (Q)? What is the equation? Include the special
consideration for solids and pure liquids.
It describes the progress/status of the reaction.
WITH COMPLETE SOLUTIONS LATEST UPDATE
How are E and ΔG related in an equation?
ΔG = - n x F x E.
n is moles of electrons.
F is Faraday's constant.
E is Ecell.
What powers processes in a cell?
ATP hydrolysis.
What does thermodynamics describe?
The changes in the form of energy when a reaction occurs.
E.g. converting chemical energy to heat.
What does kinetics describe?
How quickly or slowly a reaction or equilibrium occurs.
What does an equilibrium describe?
Reactions in which the reactants and products coexist.
, What powers ATP synthesis?
The protons trying to achieve equilibrium but never achieving it.
What is Kc? Show how Kc would be calculate for this reaction:
aA + bB ⇌ cC + dD
The equilibrium constant of a given reaction at a given pressure and temperature.
Kc = ([C]^c x [D]^d)/([A]^a x [B]^b).
What does a large and small Kc mean in terms of whether the equilibrium leans towards reactants or
products? How does Kc relate to ΔG?
A large Kc means there is more product present. This means ΔG is negative as the reaction occurs
spontaneously.
A small Kc means there is more reactant present. This means ΔG is positive as the reaction does not
occur spontaneously.
What affects Kc and Kp?
Only temperature.
What is the function of the reaction quotient (Q)? What is the equation? Include the special
consideration for solids and pure liquids.
It describes the progress/status of the reaction.
