Rate of Reaction Coursework Essay

Statement of Inquiry: What is the effect of changing a factor on the rate of chemical reaction?

The first step that needed to be done in this experiment was adding hydrochloric acid (HCl)

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.

When using different methods to measure pH levels there are some tools that can be useful. Some more than others but by putting into action the different methods it may determine which tools will work best and give the best results when testing the pH within a solution. The pH, which stands for the proportion of hydrogen ions in a solution, could be acidic (acidosis), neutral or basic (alkaline). The pH scale goes from numbers 1 through 14. A pH of 7 is neutral;

It is expected that the concentration of hydrochloric acid will increase the rate of the reaction between magnesium ribbon and hydrochloric acid. By increasing the concentration of

Next, add concentrated HCl drop wise until the litmus paper indicates that it is acidic. During this procedure, I added to much HCl because many CO2 gas bubbles evolved. This error in the experiment will cause the recovery % to be lower.

4. If HNO3 was used in place of HCl, I’d expect the rate of change to be about the same as both are strong acids. However, if acetic acid (CH3COOH) were to be used instead of HCl, I’d except the reaction rate to be slower as acetic acid is a weak acid and it will dissociate in the water unlike the stronger

The entire process was repeated once more with 1.00-mL of 6.00-M phosphoric acid and 2.00mL of

In this experiment, a saturated calcium sulfate was already made and ready to use. 25.00 mL of this solution was then mixed with 10 mL of an ammonia buffer and 1 drop of

The Feiner Points of Leadership is one of the interesting and application oriented books I have read. I would recommend the book to my friends and colleagues who aspire to be a good leader. This book should be read by all the leaders and managers to be successful. It exemplifies some of the important skills manager or leader should practice at the same time it explains the mistakes one should avoid being a successful and effective leader. Michael Feiner’s experience in PepsiCo, given examples and instances in his tenure makes it easier to understand the facts in detail. These examples also helps retain all the points and laws explained in the book.

Rate of Reaction Between Marble Chips and Hydrochloric Acid To investigate the factors which affect the rate of reaction between marble chips and hydrochloric acid, with one in specific detail. Scientific knowledge: Marble chips erode when they are exposed to acid rain or pollution. Erosion is evident when you look at older marble buildings as in certain cases the erosion take a long time. It is more likely to occur in areas, where there is more pollution.

2cm of a solution was tested and added 2 cm of 10% of potassium hydroxide solution and the test tube was shaked.

To keep this a fair test I have made sure that the acid used is the

This is a fair test because the only thing that is changed is the drop

Kinetics of chemical reactions is how fast a reaction occurs and determining how the presence of reactants affects reaction rates. In this experiment the rate of reaction for Fe+3 and I- is determined. Because the rate of chemical reactions relates directly to concentration of reactants, the rate law is used to find the rate constant, and calculated with specified temperatures.