Water has both Van Der Waal forces and Hydrogen bonds while Hydrogen sulphide has Van Der Waal forces only between
molecules. v1 Hydrogen bonds are stronger than Van Der Waal forces. v
john3 answered the question on November 4, 2017 at 22:57
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State and explain the observations made when concentrated nitric (V) acid is added to copper turnings
Date posted: November 4, 2017. Answers (1)
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Explain how the rate of the reaction between lead and nitric (V) acid would be affected if the temperature of the reaction mixture was lowered.
Date posted: November 4, 2017. Answers (1)
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Date posted: November 4, 2017. Answers (1)
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Date posted: November 4, 2017. Answers (1)
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Chlorine gas dissolved in distilled water to form chlorine water
(a) Name the compounds present in the chlorine water
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Date posted: November 4, 2017. Answers (1)
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A student was asked to determine the percentage of zinc metal in a mixture of zinc metal and zinc oxide. He reacted the mixture with excess hydrochloric acid and accurately collected the gas evolved, which was then used to calculate the amount of zinc in the mixture.
(a) Name the gas that was evolved
(b) Apart from the reaction liberating the gas write a balanced equation for the other reaction that took place.
(c) Why would dilute nitric acid not suitable for this reaction?
Date posted: November 4, 2017. Answers (1)
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A sample of water in a beaker was found to boil at 102 at 1 atmospheric pressure. Assuming that the thermometer was not faulty, explain this observation.
Date posted: November 4, 2017. Answers (1)
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Date posted: November 4, 2017. Answers (1)
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Date posted: November 4, 2017. Answers (1)
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Date posted: November 4, 2017. Answers (1)
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Explain this observation:
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Date posted: November 4, 2017. Answers (1)
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Give the agencies of the cation and onion in each of the following compounds.
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2)magnesium carbonate
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Date posted: November 4, 2017. Answers (1)
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Date posted: November 3, 2017. Answers (1)
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Date posted: November 3, 2017. Answers (1)
- 1.(a) Define electrolysis
(b) During the electrolysis of molten aluminium oxide, write the equations at the;
Anode -
Cathode -(Solved)
1.(a) Define electrolysis
(b) During the electrolysis of molten aluminium oxide, write the equations at the;
Anode -
Cathode -
Date posted: November 3, 2017. Answers (1)
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Date posted: November 3, 2017. Answers (1)
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Describe how sodium sulphate crystals can be prepared starting with 50cm3
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(VI) acid
Date posted: November 3, 2017. Answers (1)
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Date posted: November 3, 2017. Answers (1)
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Date posted: November 3, 2017. Answers (1)
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Date posted: November 3, 2017. Answers (1)