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The energy profile diagram below illustrates the energy changes for an uncatalysed reaction, while the dotted line depicts the energy changes for the catalysed reaction.

Image failed to load: Energy profile: curve starts at 100, rises to 190 kJ/mol, then descends to 50 kJ/mol. A second dashed curve rises to 40kJ/mol

Which of the following best matches the energy profile diagram?

for uncatalysed reaction is

The for the uncatalysed forward reaction is

for catalysed reaction is

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The equation for a reaction is

The expression for the equilibrium constant for the reaction is

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The oxidation of nitrogen monoxide, , to nitrogen dioxide, , can be represented by the following equation:

of and of were added to a reaction vessel kept at . The amount of present at equilibrium is .

What is the equilibrium constant at ?

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Consider the equilibrium reaction:

Which statement is true regarding the concentrations of the species at equilibrium?

The concentration of ammonia increases indefinitely.

The concentration of nitrogen continuously decreases.

The reaction proceeds only in the forward direction.

The concentrations of reactants and products remain constant over time.

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What effect does increasing the temperature have on the rate of reaction?

The reaction rate increases as activation energy is decreased.

The reaction rate decreases due to decreased energy of reactants.

The reaction rate increases because more particles have sufficient energy to overcome the activation energy barrier.

The reaction rate decreases because the equilibrium shifts to favour reactants.

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The rate of a reaction between sulfuric acid and powdered magnesium carbonate could be increased by

replacing the powder with a lump of magnesium carbonate.

decreasing the concentration of the acid.

adding a catalyst to the mixture.

cooling the reaction mixture.

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Which of the following statements best describes the impact of a catalyst on the enthalpy change of a chemical reaction?

A catalyst does not affect the enthalpy change; it only alters the activation energy through providing an alternative pathway.

A catalyst changes the enthalpy change to zero.

A catalyst decreases the enthalpy change, making the reaction less endothermic.

A catalyst increases the enthalpy change, making the reaction more exothermic.

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Which of the following statements about gas pressure in a reaction involving gaseous reactants is true?

Increasing gas pressure decreases the concentration of gas molecules.

Increasing gas pressure increases the number of effective collisions between gas particles.

Lowering gas pressure speeds up the reaction rate.

Gas pressure has no effect on the reaction rate.

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Serving size =

Amount per serving:

Carbohydrates:
Proteins:
Fats:

Using the nutritional information above, calculate the maximum energy value of chips per serve, in .

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All the information about what you need to do for CPD can be found on the CPD website, including a list of suggestions for ways to get CPD hours.

What is the last experience listed under the Engineering-related Monash Activities section?

Unpaid work experience

❌

Monash Engineering Teams, Clubs & Societies

❌

Volunteering activities

❌

Monash Virtual Career Fairs

✅

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