Influencing Factors (HSC SSCE Chemistry): Flashcards

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Influencing Factors
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Catalyst definition

Speeds up reaction without being permanently changed itself

Effect of higher reactant concentration

Increases reaction rate

Effect of 10circC10^circ\text{C} rise on some reactions

Can double the reaction rate

Homogeneous reaction definition

All reactants in same phase

Heterogeneous reaction definition

Occurs at interface between different phases

3 factors affecting homogeneous reactions

Concentration, catalyst, temperature

How many factors affect heterogeneous reactions?

5 factors

2 additional factors for heterogeneous reactions

Surface area (state of division) and stirring

Why does ↑ surface area speed up heterogeneous reactions?

More solid in contact with other phase

Why does stirring speed up heterogeneous reactions?

Brings fresh reactant to solid surface

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Explore HSC SSCE Chemistry Model Answers by Topics

Types of Chemical Reaction

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Explore HSC SSCE Chemistry Quizzes by Topics

Types of Chemical Reaction

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Explore HSC SSCE Chemistry Exam Questions by Topics

Types of Chemical Reaction

Reactions of Metals

Galvanic Cells and Standard Electrode Potentials

Rates of Reaction

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