Effect of Concentration and Pressure Flashcards

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What does the concentration of a solution mean?

Concentration tells you how much dissolved substance (solute) there is in a certain volume of solution.

The rate of reaction increases, so the reaction happens faster.

There are more particles in the same volume, so particles collide more often and the rate increases.

The rate of reaction decreases, so the reaction happens more slowly, because collisions are less frequent.

It squeezes the gas particles into a smaller volume, so they are closer together.

Increasing the pressure makes the reaction faster.

The particles are closer together, so they collide more often, which increases the rate.

Changing the pressure has a big effect when the reactants are gases.

Both pack more reacting particles into the same volume, so collisions happen more often and the rate increases.

You should keep things like temperature, surface area of any solids, use of any catalyst and total volume of solution the same.