An investigation into how changing one variable influences the rate of reaction between marble chips and dilute Hydrochloric acid
Planning Section
When dilute hydrochloric acid reacts with marble chips the following reactions occurs:
CaCO3 + 2HCL = H2O + CO2
This is the reaction we will be investigating. We will be investigating what changes the rate of reaction.
A list of variables that could affect the rate of reaction
- Temperature
- Concentration
- Surface Area
- Temperature: This variable changes the rate of reaction, when the temperature is increased the rate of reaction is quicker, because the particles have more energy to move around and collide with each other.
The more collisions between particles in a given time, the faster the rate of reaction.
- Concentration: There will be a concentration of acid and a concentration of water as well. This variable changes the rate of reaction, by adding more acid in concentration than the water then the reaction will take place quicker because there is more acid to react with the marble chips, and if you add more water then the reaction will take longer because there is less acid to react with the marble chips. - Surface Area: this variable changes the rate of reaction because if we increase the surface area, we increase the rate. Surface area is the measure of how much surface is exposed. So for the same mass of the marble chips, small chips have a larger surface area than bigger chips, this means that rate of the small chips will be quicker than the bigger ones.
Here are reasons why changing the variable is likely to have an effect: - Temperature: if you are to change the temperature it will change the rate as well. If you increase the temperature this will increase the rate, because the heat gives energy to the acid and water particles, which means they hit the marble chips more.
- Concentration: If you are to change the concentration there is a definite change in the rate. The more acid you add the quicker the rate because as you increase the concentration of the acid, there are more acid particles in the same volume. Therefore there is greater chance of acid particles hitting and colliding, with particles on the surface of the marble. You have increased the rate of reaction.
- Suface Area: if you are to change the surface area it is going to affect the rate. The larger the surface are then the rate will be quick, the smaller the surface area the slower the rate. The more the collisions between particles in a given surface area the quicker the
The Effect of Temperature of Hydrochloric Acid on the Rate of Reaction Between Hydrochloric Acid and Magnesium
Hydrochloric acid + calcium carbonate arrow calcium chloride + carbon dioxide + water. HCl(aq) + CaCO3(s) arrow CaCl2(aq) + CO2(g) + H2O(l) Things that affect the reaction rate of this experiment are: 1. The temperature of the hydrochloric acid. 2.
Rate of Reaction Between Marble Chips and Hydrochloric Acid. The aim of this experiment is to find out how different variables affect the rate at which the reaction between Marble chips (CaCO ) and Hydrochloric acid (HCl) is used. There are many variables that affect the rate of this reaction such as the following. 1.
to the marble chips. I will have 30 ml of mixture and split it in to
the acid was at 14 C the magnesium took 141 seconds to react and 27 C
The Effect of Temperature on the Rate of Reaction Between Hydrochloric Acid and Calcium Carbonate
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The reason I believe this is that chemical reactions occur when particles of the reacting substances collide. Increasing the number of the particles increases the number of collisions per second and this increases the reaction rate. In the reaction between hydrochloric acid and calcium carbonate you can increase the number of particles in two ways. The first of these is to increase the surface area of the calcium carbonate.
will result in an increase in the speed of the rate of reaction it has
from 10cm to 50cm to make it easier to see the difference in a graph.
Rate of Reaction - Sodium Thiosulphate and Hydrochloric Acid. Aim Investigation, to find out how the rate of reaction between sodium thiosulphate and hydrochloric acid is affected by changing the concentration. Introduction I must produce a piece of coursework investigating the rate of reaction, and the effect different changes have on them. The rate of reaction is the rate of loss of a reactant, or the rate of development of a product during a chemical reaction. It is measured by dividing 1 by the time taken for the reaction to take place.
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Investigating How the Concentration of Hydrochloric Acid Affects the Rate of Reaction with Calcium Carbonate
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