This website uses cookies to ensure you have the best experience. Learn more

How Concentration Affects Rate Of Reaction

639 words - 3 pages

Title: A study into how concentration affects rate of reaction
Aim: We want to find out how concentration affects rate of reaction
Hypothesis: We predict that the reaction will happen faster if we have a higher concentration
Equipment: timer, conical flask, measuring cylinder, chemicals
1. Gather all the apparatus required for the experiment
2. Next using a weight balance measure out 8g of sodium thiosulfate which we added to the 200cm3 of water , which we mixed until all the crystals were dissolved
3. Once this is done then you pour out 50c3,40cm3,30cm3,20cm3,10cm3 of the solution into five same conical flasks ,once this is done you then add water to the other conical flask in 50cm,make sure you label the flasks so that you know which one has so much concentration .
4. After this is done you must now take a beaker and add 35cm3 of concentration hydrochloric acid to 65cm3 of water to make a diluted solution
5. Now then take ...view middle of the document...

005 |
16 | 20 | 30 | 10 | 75 | 75 | 75 | 0.013 |
24 | 30 | 20 | 10 | 35 | 45 | 40 | 0.023 |
32 | 40 | 10 | 10 | 36 | 34 | 35 | 0.03 |
40 | 50 | 0 | 10 | 25 | 25 | 25 | 0.04 |
| | | | | | | |

As the concentration of sodium thiosulfate was increased the time taken for the reaction decreased, this happened because the rate of reaction is directly proportional to the concentration. For example in my results when the concentration is 8 and the time taken for the reaction to happen is 200 seconds whereas when the concentration is 40 the time taken is 25 seconds. This shows the higher the concentration is the less time it will take for the reaction to occur. This happens because when there’s a high concentration there are more particles in the area so more of collisions.
I think that my experiment was a reliable test because we repeated it twice. This shows that we got accurate results which show that my experiment is more reliable. However I think that we could improve it by repeating the experiment three times to get more of consistent results. In my results I got an anomaly at the concentration of 24.

Other assignments on How Concentration Affects Rate Of Reaction

Second Order Reaction Kinetics Essay

2803 words - 12 pages - [6] which was used to calculate the concentration of hexacyanoferrate (III). From the stoichiometry of the reaction, the concentration of ascorbic acid at a given time is: C6H8O6=C6H8O60-12FeCN603--FeCN63- Once the initial concentrations are known for ascorbic acid and hexacyanoferrate (III) ion were calculated, the following equation 7 could be used to calculate for the rate constant k using the slope of ln[C6H8O6] /[Fe(CN)] vs time [7

Case Study

1920 words - 8 pages concentration in the gradient, so the solutes were not present in the filtrate. 2. Describe two variables that affected the rate of filtration in your experiments. Filtration rate Number of Solutes 3. Explain how you can increase the filtration rate through living membranes. Increasing pressure increases the filtration rate. 4. Judging from the filtration results, indicate which solute has the largest molecular weight. Na+Cl


934 words - 4 pages of the porphyrin forces Helix F to shift (~1Å) 3. The shift of the Helix F causes the 3° structure of the subunit to change, which in turn affects how the protomers interact * Specifically at the α1 – β2 interface during the T R transition 4. The subunit structural changes reduce the number of salt-pair interactions at their C-terminals Their conformational change caused by oxygen binding tears these ionic interactions

Victor Cheng

317 words - 2 pages Customer Company Product Competition Who is the customer? - identify segments (segment size, growth rate, % of total market) - compare current year metrics to historical metrics (look for trends) What does each customer segment want? - identify keys needs What price is each segment willing to pay? - determine price points and price elasticity/sensitivity Distribution channel preference for each segment Customer concentration and power

Math Bellevue

5441 words - 22 pages requires regular measurement of levels of pollutants. The measurements are indirect—a typical analysis involves forming a dye by a chemical reaction with the dissolved pollutant, then passing light through the solution and measuring its “absorbence.” To calibrate such measurements, the laboratory measures known standard solutions and uses regression to relate absorbence and pollutant concentration. This is usually done every day. Here is one series

Chem Test2

1680 words - 7 pages | | | Ag | | | This is not an oxidation-reduction reaction. | 1 points   Question 10 Determine the reducing agent in the following reaction. | | O | | | H | | | C | | | Fe | | | Li | 1 points   Question 11 Consider the following balanced reaction. How many grams of water are required to form 75.9 g of HNO3? Assume that there is excess NO2 present. The molar masses are as follows: H2O = 18.02 g/mol, HNO3

Federal Reserve Chairman Game Reflection

336 words - 2 pages The Federal Reserve Chairman Game is very interesting and does a great job of illustrating how the monetary policy is used to promote economic growth and stability. The game shows how the federal funds rate affects unemployment rate and inflation. The goal of the game is to control the interest rate so that it keeps the inflation rate and unemployment rate within the acceptable range. It is very difficult to make the proper changes to the

Organismic Biology - Tutorial 4 (Photosynthesis: The Basis Of Life)

1925 words - 8 pages reactions. The light dependent reaction takes place where there is a light source (naturally it would be sunlight). This phase takes hydrogen from the water, releases oxygen, changes light energy into chemical energy, and makes glucose: 2H2O  4H+ + 4e- + O2 The light independent reaction occurs during nighttime. It uses the oxygen and glucose made in the first phase to create and release CO2. The length of this process depends on how much

College Success

2560 words - 11 pages . • External and internal distracters consume space in working memory, disrupt your brain wave patterns, and affect the flow of stimuli throughout your memory system (Wong 125). There are seven strategies to increase concentration when you study. They are: • Set learning goals - knowing what you plan to do and how to do it gives you purpose and concentration. • Be an Active Learner – active learning discourages you from reading or

Yeast Culture Lab

1353 words - 6 pages as budding (Smith & Smith, 2012). Reproduction in reference to yeast depends on the species; the species can be both asexual by mitosis and sexual by budding (Smith & Smith, 2012). Consumption refers to use and the rate of use of something such as how a consumer, such as a primary consumer like a tree would use photosynthesis to make energy from carbon dioxide. Death in reference to a population is referring to the rate of death in that

Sports Psychology

1369 words - 6 pages field. It is self-assessing and measures how the person feels typically. It gets completed away from competition. The SAS breaks down trait anxiety into 3 sections: Somatic, how much one sees their physical symptoms, the level of worry or self-doubt in the cognitive stage and the concentration disruption in how they can continue to concentrate during competition. Situational stress can be a factor in anxiety and there are 2 common sources

Similar Documents

Rate Of Reaction Essay

1081 words - 5 pages time. Some reactions can happen quickly at the start and then slow down. You have one average rate, but the instantaneous rates can tell you the whole story.  Scientists measure all of these rates by finding out the concentrations of the  In the mixture. If you find out the concentration of molecules at two different times, you can find out what direction the reaction is moving toward and how fast it is going. Even if the concentrations are

1. Discuss How The Interaction Of Class, Gender, Race And Age Affects Criminal Opportunities

298 words - 2 pages Many criminologists have looked for the answers on the effects of crime with only a few who agree on common grounds on why some choose to commit crimes and others choose to defy it even though there are given opportunities. Criminologists have found four sociological variables class, gender, race, and age are now viewed as a direct contributor to deviant behavior. One view as put by Anderson “When alienation becomes so entrenched, an

Biology Essay

650 words - 3 pages ) Referring to the data recorded in part I, the concentration of the catalase that had the fastest rate of reaction was at 100%. Whereas the slowest was at 0%. Part I : Effect of enzyme concentration | | |Reaction rate (mm/s) |Class average | |% of catalase |Group 1 |Group 2 |Average

Kinetics By The Initial Rate Method

3232 words - 13 pages the initial rate of the reaction was 3.00E-6 M/s, not 5.32E-6 M/s. Further, again taking the error into account, the experimental value of the reaction order with respect to I2 was 0.023, which is close to 0, although without duplicate runs, how close cannot be determined; comparing runs 1 and 6, the initial rate is practically unchanged when the initial concentration of I2 was more than doubled. Other errors were probably made in the