How does pressure and conintration affect reaction rates

Effect of concentration and pressure. The rate of chemical reaction can be changed by altering the concentration of a reactant in solution, or the pressure of a gaseous reactant. if the concentration or pressure is increased:The reactant particles become more crowded.

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Increasing the pressure on a reaction involving reacting gases increases the rate of reaction. Changing the pressure on a reaction that involves only solids or liquids has no effect on the rate. If you increase the pressure of a gas, you squeeze it into a smaller volume. In order for any reaction to happen, the particles must first collide. If there are more molecules in a smaller volume, the chances of collision are greater, and the rate increases. The volume of solids and liquids does not change with pressure. Increasing the pressure on solids and liquids has no effect on the reaction rate.

c-14 is carbon-14, or radiocarbon.   it is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.

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