How Does Surface Area Affect The Rate Of Reaction

The cup with the second greatest change in mass of the rock was number 2. Cup 2 had the solution of 10% vinegar and resulted in the change of -0.3g. Lastly, Cup 3 with distilled water had the lowest change in the mass of the rock, of 0g. It was hypothesized at the beginning that Cup 3 with distilled water would have the least amount of change, if any. This hypothesis was correct. Water is not acidic, so there would be no reason for the rock to change. When the hypothesis was conducted, it was based on the pH level. Instead, the actual solution should have been taken into consideration. The fact that the soda water would eventually lose its carbonation and become flat within a few days. Therefore, taking the acidity away. The experiment was done correctly, and there did not need to be any changes. Just the hypothesis could have been more thoroughly

As the substrate in increased the initial reaction rate will increase until it is fully submerged and then will not increase any more. The relationship is linear. As the substrate concentration increases, the initial reaction rate increases.

2. Slope can be used to determine the effect of the magnesium on the reaction rate by how close it is to the number one, when it is showing an increase in reaction rate. As hypothesized, the magnesium with the greatest surface area would have the fastest reaction rate. Hence, it would have the greater slope value as well.

Discussion Prior to setting up the Chemical Weathering Lab, we were asked to state 4 hypothesis and explain the scientific reasoning behind each of them. I first hypothesized that the cup with the 50% vinegar solution would have the greatest amount of chemical weathering because it was the most acidic of the four solutions, thus it was likely to be the most effective at chemically breaking down and weathering the rock. I then hypothesized that the cup with the 10% vinegar solution would have less chemical weathering than the 50% vinegar solution because it would be less acidic and would not be able to chemically breakdown the rock at a rate similar to the 50% vinegar solution. My third hypothesis was that the cup with the soda water solution

Limiting Reactant Lab Abstract The purpose of this lab was to use stoichiometry (fixed molar ratios) to determine quantitatively how Copper (II) Chloride and metallic aluminum react, known as an oxidation-reduction reaction. By varying the quantities of CuCl2H2O and Al and observing the reaction we were able to determine the limiting and excess reactants, and were also able to use stoichiometric calculations to determine the theoretical yield of Cu and then compare it to the actual yield of Cu to determine the percent yield of the reaction, which was found to be 22.5%. The percent yield of this experiment was less than desirable due to the fact that not enough Al was added to fully react all of the Cu. Using stoichiometry it was determined

Enzymes are proteins which can catalyse chemical reactions without changing themselves. The enzyme lipase breaks down the fat in dairy products such as full-cream milk for people who are lactose intolerant. Lipase acts on its specific substrate, lipids produces fatty acids. If enzyme concentration increases, random collisions between the substrates and active sites of enzyme increase due to the increasing amount of active sites which allow more collisions to happen, so the rate of breakdown of lipids to simpler substances will increase. During the experiment, sodium carbonate solution and pH indicator phenolphthalein will be added ahead of

In my hypothesis, I stated that there would be a faster reaction rate when the marble chips are small and is mixed with a higher level of concentration ( crushed marble chips, 2.0M hydrochloric acid). According to my results, there was a faster reaction in Part B, which was the small chips mixed with 2.0M HCI.

Hypothesis: If a more acidic solution is added then the limestone will dissolve more because stronger solutions break down the bonds between the particles faster. Procedure: Get four 150ml beakers and label them 1 through 4. Fill the first beaker with 60ml of water. Fill the last three beakers with 60 mL of each acidic solution and label each beaker with the acidic content.

The null hypothesis for the first experiment was that substrate concentration would have no effect on the reaction rate. It was hypothesized that the reaction rate would increase with rising substrate concentrations, until all active sites were bound. The null hypothesis for the second experiment was that temperature would not have an effect on reaction rates. It was hypothesized that until the enzyme is denatured, as temperature increased, so would the reaction rate.

Chemical kinetics involving reaction rates and mechanisms is an essential part of our daily life in the modern world. It helps us understand whether particular reactions are favorable and how to save time or prolong time during each reaction. Experiment demonstrated the how concentration, temperature and presence of a catalyst can change the rate of a reaction. 5 runs of dilution and reaction were made to show the effect of concentration on chemical reactions. A certain run from the previous task was twice duplicated to for a “hot and cold” test for reaction rate. The prior run was again duplicated for a test with

How concentration affects the rate of reaction between Hydrochloric Acid and Sodium Thiosulphate Chemistry Coursework How Concentration Affects a Reaction Aim: The aim of this experiment is to find out how concentration affects the rate of reaction between Hydrochloric Acid and Sodium Thiosulphate. Introduction: This experiment will be carried out by drawing a cross on a piece of paper and mixing hydrochloric acid and sodium thiosulphate together to see if the cross disappears. The concentration of hydrochloric acid would change every reaction to show that concentration effects a reaction.

In reference to the collision theory, molecules act as small spheres that collide and bounce off each other, transferring energy among themselves when the collide. In order for a reaction to occur, there must be collisions between molecules. Through experimentation, factors are discovered that influence the reaction rates of chemical reactions include the concentration of reactants, temperature, surface area, the physical state of reactants, and a catalyst. This experiment regarding the factors that affect reaction rate tests the effects of increased concentration and

To learn about limiting reactants we received a lab that has both limiting reactants and excess reactants. The objective of the lab was to make chalk using calcium chloride and sodium carbonate. There was three trials

The rate at which a reaction occurs, or takes place, is affected by various factors, such as the temperature at which the experiment is conducted in, the pressure which is given, the surface area which is exposed, use of catalysts, and the concentration. In this investigation, I would be investigating the affect of surface area, or particle size, in the rate at which a reaction occurs.

In this analysis of the factors that affect reaction rates, the purpose of the lab was to find the relationship between the change of surface area and reaction rate using Alka Seltzer tablets. In order to determine the connection between the surface area and reaction rate, the time it took for the reaction to finish was recorded for five different surface areas of the tablet. The ceasing of the production of bubbles and fizz and the complete dissolution of the tablet was established as the finished reaction. Water and the Alka Seltzer reacted to form Carbon Dioxide bubbles. As displayed in Graph 1, the relationship between surface area and reaction rate was represented by the positive slope and trend line. Through the data and results, it was concluded that as surface area increases, the rate of reaction also increases representing a direct relationship. The increase in the surface area created more contact and collisions, which increased the rate of the