Rate equations

Created by: Alice1425
Created on: 02-07-18 16:44

What does reaction rate tell you?

How fast reactant are converted to products.

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How can you work our reaction rate from a graph?

Draw a line of best fit through data points, pick 2 points on the line that are easy to read, draw a vertical line from 1 point and a horizontal line from the other to make a triangle, work out gradient (change in y/change in x)

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How can you work out the gradient from a curved graph?

find point on the graph you need, draw a line across that point to make a tangent to the curve, calculate gradient of the tangent.

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for the reaction A + B -> C + D, what is the general rate equation?

Rate = k[A]m[B]n ([] + concentration and n & m= orders)

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What do orders of reaction tell you?

How concentration affects the rate

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if [A] changes and the rate stays the same, what order is A in?

Zero order

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if [A] is proportional to the rate, what order is A in?

First order

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if the rate is proportional to [A] squared, what order is A in?

Second order

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what is k?

The rate constant, the bigger the value of k, the faster the reaction.

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how is k affected if you raise the temperature of the reaction?

It will increase

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how is k affected if you increase the concentration?

there will be no effect

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Other cards in this set

Card 2

Front

How can you work our reaction rate from a graph?

Back

Card 3

Front

How can you work out the gradient from a curved graph?

Back

Card 4

Front

for the reaction A + B -> C + D, what is the general rate equation?

Back

Card 5

Front

What do orders of reaction tell you?

Back

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Rate equations