I am going to investigate the rate of reaction between calcium carbonate and hydrochloric acid. I will look at the various factors affecting the reaction and select one variable to change, while the others keep constant in order to carry out a deta... Investigating Rate of Reaction Aim I am going to investigate the rate of reaction between calcium carbonate and hydrochloric acid. I will look at the various factors affecting the reaction and select one variable to change, while the others keep constant in order to carry out a detailed investigation. Formulae ======== The formula for the chemical reaction is: ========================================= CaCO3(s) + 2HCC(l) CaCl2 (aq) + H2O(l) + CO2 ============================================ I can measure the rate of reaction between the two substances using this formula. Rate of Reaction = Change in Concentration ------------------------------------------ Time Taken for Reaction A chemical reaction is the name given to a substance when it changes and becomes a completely new substance. It is difficult to reverse. It happens when particles make effective collisions with sufficient energy. Apparatus ========= Spatula ------- Conical Flask ------------- Burette Stand + Clamps Measuring Cylinder Safety Goggles Beaker Thermometer Stopwatch Kettle + water Small Funnel Delivery Tube + Bung I have chosen to use a measuring cylinder to make my experiment as accurate as I possibly can. I will be wearing the provided safety goggles at all times to protect my eyes, as hydrochloric acid is an irritant that may prove dangerous if it makes contact with the eyes. Theory The following theories will help me decide which variable I will change in my experiment to investigate the rate of reaction using calcium carbonate and hydrochloric acid. Temperature - Collision Theory ============================== The diagram shows particles that are not moving quickly. This means that the chance of these particles colliding and causing a chemical reaction is rather low. The temperature is obviously low too, as the particles have little energy to move quickly. However, if heat were added, the particles would have more energy and move quicker and have a better chance of colliding. This diagram shows particles that are moving quickly. This means... ... middle of paper ... ...respond with my prediction and back it up. As the temperature increases, so does the rate of reaction. If I were to repeat the experiment again, I would work under strict environment, such as in a closed room with no winds or temperature changes. I would also try and use more accurate ways of reading the temperature and keeping the temperature constant, such as by using a water bath. Doing this would possibly make my results even more accurate. I would also try and make my timing even stricter, possibly using a smaller time interval such as 10 seconds instead of 15, to get slightly more accurate results. I may also use a larger range of acids. I only tried the 1 molar acid, but if I were to repeat the experiment again, I would perhaps use 3 and 4 molar acids and test them under high temperatures. I would like to investigate in future the effect of catalysts and surface area on the rate of reaction, to be more conclusive on the subject and widen my knowledge. All in all, my experiment was a success. Everything went well, and I believe that the techniques and methods I used were accurate and sufficient enough to provide me with a sound set of conclusive results.
limestone chips, I will use 3g all the time and use 2 moles of acid.
CaCl2 + H2O + CO2
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Reaction 1: CaCO3(s) + 2HCl(aq) CaCl2(aq) + CO2(g) + H2O(l). GRAPH 14 in both cases represents the mean of the data. Using the equation for enthalpy change: H = mcT. Where: m = Mass of liquid to which heat is transferred to (g). c =
middle of paper ... ... different from what it should be. To solve this problem a thermostatic water bath could be used as stated above. * If the stop watch was stopped to early or late, again the overall reading would not be as accurate as it could have been.
The aim is to find out if changing the concentration of the hydrochloric acid solution has an effect on the time taken for the reaction. The reaction that will take place is: Hydrochloric acid + Calcium Carbonate + Calcium Chloride + Water + Carbon dioxide 2HCl (aq) + CaCo3 (s) CaCL2 (aq) + H2O + CO2 (g). Collision theory - Collisions between reactant particles are needed. for the reaction to take place in order to form a product.
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.
from 10cm to 50cm to make it easier to see the difference in a graph.
Looking at the table of results above and the graph, it is shown that the higher the temperature got, the shorter the reaction time. The obtained results have been plotted on a line graph of the temperature of hydrochloric acid (y-axis) against reaction time (x-axis). This line graph in fig.2 also clearly shows that as the temperature increases, so does the speed of the reaction, shown by a reduction in the time taken. This corroborates the collision theory, where as the temperature of particles increase, the particles gain more kinetic energy and react with each other upon collision. This is shown as to happen in the hydrochloric acid, where the hydrochloric acid particles collide more with the particles of the magnesium ribbon as the temperature was increased. The above graph shows a gradual sloping curve, which gets steeper at higher temperatures. This shows that the reaction will reach a peak rate of activity as the gaps between the temperature and reaction times continue to decrease. The experiment fulfills the aim and clearly shows that as the temperature of a reaction is increased so does it’s rate of reaction, proving the hypothesis to be correct.
The Effect of Temperature on the Rate of Reaction Between Hydrochloric Acid and Calcium Carbonate
An investigation into how changing one variable influences the rate of reaction between marble chips and dilute Hydrochloric acid
And the symbol equation for it is:. Na2S2O3 + 2HCl, S + SO2 + 2Na + H2O. Before conducting my experiment, I will research into, amongst other things, the factors that affect the rate of a reaction. This is so that I may have enough information to understand the effect of temperature on the rate of a reaction and also gain appropriate understanding to make a suitable prediction as to what the outcome of my experiment will be. Reactions occur when the particles of reactants collide together continuously.