• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

What are some of the General Features of Redox Reactions?

Extracts from this document...


What are some of the General Features of Redox Reactions? This experiment is designed to establish whether a Redox reaction takes place when zinc is added to copper (II) sulphate solution and whether copper, magnesium or aluminium reacts with zinc (II) sulphate solution. COSSH/Risk Assessment. Copper (II) sulphate solution (1.0 mol dm-3 (20cm3)) Harmful Zinc (II) sulphate solution (1.0 mol dm-3 (20cm3)) Harmful Zinc Powder (1g) Flammable Magnesium Powder (1g) Flammable Aluminium Powder (1g) Laboratory coats must be worn at all times Eye protection must be worn at all times In case of spillage, absorb and wash to drain with copious water. Wash area with copious water. Method. 1. A small beaker (25cm3) was half filled with copper (II) sulphate solution and a note of its temperature taken using a glass thermometer ranging from 0-110oC. ...read more.


sulphate solution and a copper strip instead of the zinc strip the experiment was repeated between steps 1 and 2 and the results recorded as before. 6. Magnesium and Aluminium powders were individually placed into beakers of Zinc (II) sulphate solution stirred and the maximum temperature was recorded. Experimental Observations. Product Tested Copper (II) Sulphate solution at 19oC Product Tested Zinc (II) Sulphate solution at 18.8oC Zinc Strip 20.4oC, Copper deposited on surface but surface turned blacker as time went on. Copper Strip No reaction was recorded Zinc Powder 25oC, The solution appeared blackened. Magnesium powder 19.3oC Filtrate A shade lighter in comparison than the original solution. Aluminium Powder 18.9oC Conclusions. In order for a deposit to form on the zinc strip and a rise in temperature a reaction must have taken place and this can be shown as; Zn (s) ...read more.


The reverse reaction did not take place between the copper strip and the zinc (II) sulphate solution. The very small temperature change recorded when the magnesium was added to the zinc (II) sulphate solution shows that a Redox reaction has taken place, but not as vigoroursly as the zinc in copper (II) sulphate solution, and this reaction can be show as; Mg (s) ? Mg2+ + 2e- Oxidation and Zn2+ (aq) + 2e- ? Zn (s) Reduction Al (s) ? Al2+ + 2e- Oxidation and Zn2+ (aq) + 2e- ? Zn (s) Reduction Questions. Repeating the experiment ensuring that all the steps of the method are taken with care, accuracy and using thermal insulated test tubes instead of beakers, giving a greater concentration of the solution, would have yielded greater temperature changes in a shorter time, which would ensure as accurate a result as possible. ...read more.

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

See related essaysSee related essays

Related GCSE Patterns of Behaviour essays

  1. Marked by a teacher

    Chemistry copper sulphate and zinc

    3 star(s)

    amount of heat given off was 1.01 grams in the first experiment, and 0.81 and 1.01 in the second experiment. This may be due to the fact that the Evaluation This experiment was highly successful as it produced lots of fair results, and doing the experiment was fluidic and quick.

  2. Investigating the reaction between zinc and copper sulphate

    This should occur as zinc is higher in the reactivity series than copper. The reactivity series is as follows: Element Symbol Group Number Potassium K 1 Sodium Na 1 Lithium Li 1 Calcium Ca 2 Magnesium Mg 2 Aluminium Al 3 Carbon C 4 (Non-Metal)

  1. Investigation of Electrolysis of Copper (II) Sulphate Solution Using Copper Electrodes

    30 seconds allow the magnesium to fully react with the Hydrochloric acid before the reaction stops and starts giving the same results. The temperatures I am going to use are 20, 30, 40, 50, and 60�C. I will use these temperatures because it seems like a good range to get a wide variety of results.

  2. Studying the reaction between zinc and copper (2) sulphate solution.

    I then emptied the contents of the cup into the containers provided as it was dangerous to pour it down the sink. The I cleaned out all of the equipment and made sure the themometer had returned to its original temperature.

  1. Exothermic and endothermic reactions

    Therefore group 6 elements must have 2 - ions. (6 - 8 = 2-). Non metals form ions by gaining electrons. Metals form ions by losing electrons. Question 5 Which noble gas in this periodic table has the lowest boiling point?

  2. Investigating the temperature change in the reaction between powdered zinc and copper sulphate.

    During my experiment I must ensure a fair test. To do this I will keep the concentration of the copper sulphate the same, I will use the same polystyrene cup and lid in each experiment and I will time each experiment for the same period of time (1minute). I must also ensure that I use the same balance in each test as the accuracy of different balances often varies.

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