Rate of Reaction (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Flashcards

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Calculating Rates of Reactions
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Rate of reaction definition

How quickly a reaction happens

Rate measures (reactants)

How fast reactants are used up

Rate measures (products)

How quickly products are formed

Why are reaction rates important?

Help understand efficiency, useful in industrial processes

Mean rate formula (reactants)

AmountofReactantUsedTimeTaken\frac{Amount of Reactant Used}{Time Taken}

Mean rate formula (products)

AmountofProductFormedTimeTaken\frac{Amount of Product Formed}{Time Taken}

Higher rate indicates

Faster reaction

Lower rate indicates

Slower reaction

Unit for amount (mass)

Grams (g)

Unit for amount (volume)

Cubic centimetres (cm3cm^3)

Unit for time in rate calculations

Seconds (s)

Common units for rate of reaction

g/sg/s or cm3/scm^3/s

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