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Practical
Practical
Practical
Practical
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Practical

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  • 1. Industrial Chemistry Nitric Acid: Student investigation Name of the student: ______________________________________ Date received: _________________ Safety Instructions: Nitric acid is very corrosive. Safety glasses needs to be worn all the time, during conducting the practical. When handling Nitric Acid and Sulphuric Acid, gloves must be be worn by the person handling it. If any acid comes in contact with the skin or/and eye, rinse the area IMMEDIATELY with cold water and let your supervisor know about it. Investigating the reaction and products formed between Nitric Acid with
  • 2. Magnesium Aim: 1. To observe the reaction between Nitric Acid and Magnesium 2. To determine the gas released from the reaction 3. To identify any nitrate, if produced. Hypothesis:__ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Materials: 1) De-ionised water 7) 1M of Fe(II)SO4 (aq) [Few drops] 2) 1 x medium test tube 8) 2M of H2SO4 (aq) [Few drops] 3) 1 x stopper with tube a 9) 1 M of HNO3 (aq) [30mL] 4) 1 x beaker [250 mL] 10) Electronic balance 5) x 50 mL measuring cylinder 11) Match stick 6) 100 mg of Mg Methods: 1) Wash test tube with de-ionised water. 2) Put 100 mg of Magnesium into a test tube. 3) Carefully, pour 30 mL of Nitric Acid into the test tube. [You MUST wear gloves] 4) Put the stopper on the test tube. 5) Carry out a pop- test, when you can see gas evolving. 6) Observe and record the reaction. 7) Allow the Magnesium to react completely. 8) After all the Magnesium reacted, slowly add few drops of Iron (II) Sulphate. 9) Then, very carefully trying not to disturb the solution, tilt the test tube slightly. Add few drops of Sulphuric Acid. 10) Record your reaction. Diagram: Results:
  • 3. Observations: TEST OBSERVATIONS Hydrogen Test (Pop Test) Nitrate Test (Brown Ring Test) Write balanced equations (symbolic) for all the chemical changes involved: ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Discussion 1) Comment on the way Nitric Acid reacted. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ 2) Did the reaction go as you expected. Explain. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ 3) List some uses of nitrates ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ 4) Why do you think de-ionised water was used instead of other forms? ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Conclusion Write a suitable conclusion
  • 4. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________

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