• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2
3. 3
3
4. 4
4
5. 5
5
6. 6
6
7. 7
7
8. 8
8
9. 9
9
10. 10
10
11. 11
11
12. 12
12
13. 13
13
14. 14
14

# Investigation Into the Rates of Reaction.

Extracts from this document...

Introduction

INVESTIGATION INTO THE RATES OF REACTION. INVESTIGATION INTO THE RATES OF REACTION. PLAN INTRODUCTION: To investigate the rate of reaction I have decided to use the concentration as a variable, I am going to use marble chips (calcium carbonate) and hydrochloric acid. I will alter the concentration of the hydrochloric acid each time, and I will measure the amount of carbon dioxide product given off. AIM: To find the rate of the reaction of hydrochloric acid reacting with marble chips. EQUIPMENT LIST: DIAGRAM: . Delivery tube . Inverted measuring cylinder . Trough . Bung . Conical flask . Stop clock . Measuring cylinder EQUATION: Calcium carbonate + Hydrochloric acid --> Calcium chloride + water + Carbon dioxide CaCO3+ 2HCL --> CaCL2 + H2O + CO2 How we will use the apparatus safely It is important we use the apparatus carefully and safely, ensuring there are no accidents. As we are using a concentrated acid, we must wear goggles and be extra careful. If any of the acid spills onto our hands, it should be washed off immediately and reported to the teacher. We should also wear an apron, ensuring the acid does not come into contact with our skin or clothes. What are we measuring? We will be measuring the amount of CO2 given off from the hydrochloric acid. The inverted measuring cylinder will measure this in (cm�). To keep this test fair; To keep this test fair we will keep the mass of the marble chip (calcium carbonate) the same (1.23g). We will also be keeping the temperature the same (room temp). The total volume of hydrochloric acid will also be kept the same (50 cm�). In order to ensure this test is kept even fairer, we will use the same equipment. Some delivery tubes vary in length, so we shall keep that the same. We also need to make sure the bung is placed in immediately on, when the reaction begins. ...read more.

Middle

I predict, a chemical reaction cannot happen unless particles in the reacting substances collide with each other Reaction rate=change in mass (concentration) of a substances Time taken Hydrochloric acid reacts with marble chips (calcium carbonate). One product is C02 gas. We will measure the rate of reaction by timing how long it takes to make certain amount of gas. We are going to alter one factor, to find out whether it affects the rate of reaction. This factor is the concentration of the hydrochloric acid. We will carry out this experiment as accurate and reliable as we possibly can. Therefore our measurements will have to be precise. We will carry out preliminary tests to find out how many parts of water will be used against acid. We must remember, the higher the concentration of acid, the more successful collisions between acid and calcium carbonate. Also another variable, the temperature will increase because there are more collisions, which means more heat is produced. We will get a higher rate than expected. PRELIMINARY RESULTS VOLUME OF ACID (Cm�) VOLUME OF WATER (Cm�) TOTAL VOLUME (Cm�) 50 40 30 20 10 0 0 10 20 30 40 50 50 50 50 50 50 50 From looking at the above table, you can see we are keeping the total volume the same 50(Cm�). In our preliminary testing, we worked out what concentrations to use. I.e., the amount of water to the amount of acid. We will work out the molars at the end using this equation; Vol of acid (cm�) Total volume of acid + water (cm�) x 2M=final molarity CONCENTRATION = 50(Cm�) acid & 0(Cm�) water TIME (secs) VOLUME OF GAS (Cm�) TEST 1 TEST 2 TEST 3 TEST 4 AVERAGE 0 30 60 90 120 150 210 240 270 300 0 8 16 25 34 44 53 0 8.5 16.5 26 33 42 51 0 7 14 24 35 43 52 0 8 15 24 34 42 52 0 8 15 25 34 43 52 CONCENTRATION = 30(Cm�) ...read more.

Conclusion

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Patterns of Behaviour section.

## Found what you're looking for?

• Start learning 29% faster today
• 150,000+ documents available
• Just £6.99 a month

Not the one? Search for your essay title...
• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month

# Related GCSE Patterns of Behaviour essays

1. ## What affects the rate of a reaction? The reaction I will be investigating is ...

3 star(s)

Stopwatch: To time the rate of reaction. Preliminary 1 - What size of Marble Chip. In this test I used 1.5 grams of all different sizes of chips, small medium and large. I kept the concentration of acid at 1.0 M and used 20 ml of HCl. The results to this test are below: Time in (Sec)

2. ## In this project I am going to investigate rates of reaction of an indigestion ...

3 star(s)

I can either measure the mass before and after adding the tablet to the hydrochloric acid or collect the gas given off. I chose to measure the gas (after my preliminary experiments - see page 7) because: * I think this method can be modified to produce good results.

1. ## A-Level Investigation - Rates of Reaction &amp;amp;#150; The Iodine Clock

For this reason I will add starch to the reaction vessel, this will show up a deep blue color when the end point has been reached (the iodine forms a blue complex with the starch). Safety Considerations Safety glasses and disposable gloves must be worn at all times as we

2. ## Investigate how concentration of hydrochloric acid (HCL) affects its reaction with calcium carbonate (CaCO3).

This could have caused the anomalous results. * The temperature of the conical flask could have changed. This is because if I handled the conical flask for a long period of time, some heat energy from my hand would transfer to the conical flask.

1. ## Experiment to investigate how changing the concentration of hydrochloric acid affects the rate of ...

acid + 17ml of distilled water = 100ml of 2.5M 3 Provided Apparatus List * At least 15 cylinders of chalk * A beaker * A 200ml graduated cylinder * Stop watch * Hydrochloric acid ( 2M and 3M) * Funnel * Dilute water * Balance with readings to 2

2. ## To investigate the factors which affect the rate of reaction between marble chips and ...

sufficient time at the beginning of the experiment for the gas to escape from the conical flask, while the bung was being put in place, although small, this could affect our results. Also miscounting the amount of CO2 in the measuring cyclinder produced every 15 secs.

1. ## Chemistry Cwk Rates of reaction: Investigating One Factor Which Affects How Fast Calcium Carbonate ...

Changing the surface area doesn't affect energy distribution. The concentration of one or more reactants affects the rate of reaction due to the actual quantity of particles. If the reactant is more concentrated then it has a larger number of particles per unit volume and therefore there is a greater

2. ## Chemistry Rates Of Reaction Marble chips and Hydrochloric acid

These characteristics are constant for most neutralisation experiments. - As we are mixing HCL and CaCo3 I think CO2 will be given off. - If I double the acid concentration I think the speed would also double. - My graphs will show positive correlation as the lines get steeper.

• Over 160,000 pieces
of student written work
• Annotated by
experienced teachers
• Ideas and feedback to