• 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

# Investigating how varying the concentration of Hydrochloric acid affects the rate of reaction.

Extracts from this document...

Introduction

Introduction: For two substances to react in the first place their particles must meet and collide. They must collide with enough force, sufficient amount of energy (called activation energy that is the energy needed to start a reaction) and in the right direction so a reaction can successfully occur. The rate of reaction is dependent on the number of successful collisions taking place. Some reactions are instantaneous, while some, like the metaphoric rock take millions of years. The rate of reaction can be calculated as the amount of product formed or used up per second. Title/ Aim: Investigating how varying the concentration of Hydrochloric acid affects the rate of reaction. Prediction/hypothesis: I predict that calcium carbonate and hydrochloric acid will react together and that the higher the concentration the faster the rate of reaction. This is because as you increase the concentration you increase the number of particles in turn increasing the chance of particles colliding successfully. So I predict if the concentration is doubled then the rate of reaction is doubled. Apparatus: The following is a list of the equipment needed to carry out the practical: Conical Flask Delivery tube A narrow measuring cylinder to measure a smaller volume A large measuring cylinder to measure the collected gas A normal measuring cylinder for a larger volume Tub of water Weighing scale Stop watch Hydrochloric acid solution- 4 moles Marble chips to represent Calcium Carbonate Water bath Bunsen burner Thermometer Method: Diagram illustrating the layout of experiment: Firstly, I will set up the apparatus as the diagram above illustrates. ...read more.

Middle

The subsequent are the safety precautions I will take: At all times I will be wearing goggles even if I have glasses on because acid is harmful if it gets into the eyes and possibly go in through the side of my glasses. I will also handle acid carefully because it causes irritation to the skin. Having long hair, I will ensure to tie it back at all times. I shall not taste any of the chemicals and make sure to throw the lime stones in the bin and not in the sink as they will cause it to clog. In addition, I will not run around incase I bump into anything. I shall make sure to wipe any spills rapidly to prevent accidents from occurring. If a breakage of any of the equipment occurs I will immediately inform the teacher. Incase my skin starts becoming irritated I will also report it to the teacher. Secondary sources used: 2 GCSE Chemistry textbooks - 1) Chemistry for you by Colin Johnson 2) Chemistry for you by Lawrie Ryan The Internet Mrs. O'Hanlon's lessons The above mentioned sources were guidance in writing about the particle collision theory. Obtaining evidence: After carrying out the practical on the next page are the results I obtained tabulated: The acid concentration is the independent variable and the gas collected is the dependent variable. I had obtained the averaged results from this formula: Average result = first result + second result + third result 3 On the furthest right column of the tables are my results averaged. ...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. ## How Concentration affects the rate of reaction.

The results are in this table; I am going to use the same layout with the table for the results I get in the experiment but with the rest of the values of the other experiments filled in. Volume of 0.15 mol/dm� Sodium Thiosulphate solution (cm�) Volume of water (cm�)

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

Like in the 2M experiment, there seems to be larger intervals between the carbon dioxide readings at the start and middle of the experiment compared to the end. For the final method, molarities of nitric acid to be used will be 0.75, 1, 1.25, 1.5, 1.75 and 2.

1. ## Investigate the Time Taken for a Reaction to Take Place Between Antacid Tablets and ...

increases then the rate of reaction also increases. For a successful reaction to take place the ions of hydrochloric acid must collide into the atoms of the antacid tablet with sufficient energy. This energy is called the activation energy. The concentration of a given acid is a measure of how many hydrogen ions it has to react.

2. ## A report investigating the effect of Concentrated Hydrochloric Acid on Marble Chips (Calcium Carbonate).

If you heat these particles up they will absorb the thermal energy supplied and transfer it into more kinetic energy. This means that every particle has more kinetic energy and is therefore moving even faster. Collision theory explains why a chemical reaction will actually happen between two chemicals.

1. ## To investigate the effect of varying the masses of white sugar and yeast and ...

mass of white sugar and yeast present in the dough and independent of the temperature. The results obtained proved the null hypothesis wrong; the graph obtained of rate of rising of dough against mass of white sugar showed an increase in the rate of rising of dough as the mass of white sugar was increased.

to gather my things but I still kept blabbering on about how it was my fault until he eventually put his hand on mine and made me stop what I was doing. I looked up and we made eye contact.

1. ## I am planning to do an experiment to investigate how varying concentration affects the ...

For a higher concentration of sugar you could have 2 teaspoons of sugar in 200ml of tea etc... 2. Surface area; increasing the surface area will increase the rate of reaction e.g. if you have a ball of cotton in a petri dish an you put a strong acid to

2. ## Investigating making Epsom salts by varying the rates of reaction.

would be less particles per dm� which would result in a less reactant solution. Also the more concentrated the solution gets or the less used of it would mean that the solution gets weaker and less able to produce a energetic reaction.

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