Concentration - Rates of reaction.

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Concentration – Rates of reaction

Aim

The aim is to see how the concentration of hydrochloric acids effects the rate of reaction with sodium thiosulphate.

Introduction

A rate of reaction is how fast or slow the reaction is between two chemicals. There are five ways which effect the rate of reaction, they are:-

Catalyst Enzymes – If there was more catalyst enzymes the quicker the reaction is.

Temperature – If the temperature is high it will give the particles more energy which will make them collide more.

Surface Area – So there is more of the reaction substance exposed because if there was a big surface area there will be more space for the reactions to happen.

Concentration – By increasing the concentration there are more particles what will collide.

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Stirring -  By stirring it will force the particles to collide more which will make a reaction.

Equipment

Hydrochloric acid (0.25M, 0.5M, 1.0M, 1.25M, 1.5M, 2.0)

Sodium Thiosulphate

Conical Flask

Light Sensors

Measuring Cylinder

Paper

Stop Clock

Lamp

Bosses

Stand

Clamps

Fair test/ Variables/ Range/ Repeats

Fair test – This experiment has to be made fair in order for this to happen certain things have to be done right. The same person in the group has to measure the hydrochloric acid and the sodium thiosulphate.

Variables – You could change the amount of hydrochloric acid ...

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