Add ethanol to the flask containing the mixture of iron(III)chloride,zinc(II)oxide and potassium chloride.Iron(III)chloride being highy soluble in ethanol,it disolves leaving the insoluble Potasium chloride and zinc(II)oxide as solid.Filter the mixture to obtain iron(III)chloride as filtrate and a mixture of
Potasium chloride and zinc(II)oxide as residue.Warm the solution of iron(III)chloride to evaporate the ethanol that highly siblimes leaving iron (iii) chlodide as crystals.Transfer the residue in another flask and add water to it.Potassium chloride being highly soluble in water,it dissolves leaving the insoluble Zinc (ii) oxide as a solid.Filter the mixture to obtain Potassium chloride as a filtrate and Zinc ii Oxide as residue.Dry the residue between filter papers.Heat the filtrate to saturation level and allow it to cool to form crystals of potassium chloride.Dry the crystals between the filter papers.
Mr Masinde answered the question on April 24, 2018 at 14:19
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Substance Q has a melting point of 15°C and boiling point of 70°c.
(a)On the same axis,draw the melting point and boiling point graph for Q...
(Solved)
Substance Q has a melting point of 15°C and boiling point of 70°c.
(a)On the same axis,draw the melting point and boiling point graph for Q and the room temperature.
(b)State the physical state of substance Q at room temperature.
Date posted:
April 22, 2018
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Answers (1)
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Explain why ammonium trioxocarbonate (iv) leaves no residue when heated
(Solved)
Explain why ammonium trioxocarbonate (iv) leaves no residue when heated
Date posted:
April 22, 2018
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Answers (1)
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Write chemical equation for reaction between dry hydrogen gas and heated lead (ii) oxide
(Solved)
Write chemical equation for reaction between dry hydrogen gas and heated lead (ii) oxide.
Date posted:
April 21, 2018
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Answers (1)
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Given the following reagents describe how to prepare lead (ii) sulphate, Solid potassium sulphate, solid lead (ii) carbonate, dilute nitric (iv) acid and distilled water.
(Solved)
Given the following reagents describe how to prepare lead (ii) sulphate: Solid potassium sulphate, solid lead (ii) carbonate, dilute nitric (iv) acid and distilled water.
Date posted:
April 19, 2018
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Answers (1)
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What are the advantages of universal indicators over other acid-base indicators?
(Solved)
What are the advantages of universal indicators over other acid-base indicators?
Date posted:
April 19, 2018
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Answers (1)
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A crystal of copper (II) sulphate was placed in a beaker of water. The beaker was left standing for two days without shaking. State and...
(Solved)
A crystal of copper (II) sulphate was placed in a beaker of water. The beaker was left standing for two days without shaking. State and explain the observations that were made.
Date posted:
April 17, 2018
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Answers (1)
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Explain how the hotness of a bunsen burner flame can be increased
(Solved)
Explain how the hotness of a bunsen burner flame can be increased.
Date posted:
April 17, 2018
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Answers (1)
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Explain why it is not advisable to store a solution of cadmium nitrate in a container made of zinc
(Solved)
Explain why it is not advisable to store a solution of cadmium nitrate in a container made of zinc.
Date posted:
April 17, 2018
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Answers (1)
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Dry ammonia gas is passed over heated lead(II) oxide in a combustion tube.
a) What observation would be made in the combustion tube
b) Outline a chemical...
(Solved)
Dry ammonia gas is passed over heated lead(II) oxide in a combustion tube.
a) What observation would be made in the combustion tube
b) Outline a chemical test you would use to identify the colourless liquid collected in the u-tube
c) Name the colourless liquid
d) Write an equation for the reaction between ammonia and lead(II)oxide
Date posted:
April 17, 2018
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Answers (1)
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Name the method that can be used to obtain pure iron (III) chloride from a mixture of iron (III) chloride and sodium chloride
(Solved)
Name the method that can be used to obtain pure iron (III) chloride from a mixture of iron (III) chloride and sodium chloride.
Date posted:
April 14, 2018
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Answers (1)
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Calculate the number of moles of molecules in 7.30g of HCL
(Solved)
Calculate the number of moles of molecules in 7.30g of HCL
Date posted:
April 12, 2018
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Answers (1)
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Starting with lead oxide, describe how you can prepare lead chloride.
(Solved)
Lead chloride is an insoluble salt so it is prepared by double decomposition. So basically we must come up with a soluble salt from the lead oxide, the mix it with another soluble chloride to form the lead chloride.
Date posted:
April 12, 2018
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Answers (1)
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Starting with lead(ii)oxide, describe how you would prepare a solid sample of lead (ii)chloride
(Solved)
Starting with lead(ii)oxide, describe how you would prepare a solid sample of lead (ii)chloride.
Date posted:
April 11, 2018
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Answers (1)
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Fraction distillation of liquid air usually produces nitrogen and oxygen as the major products
1. Name one substance that is used to remove carbon dioxide...
(Solved)
Fraction distillation of liquid air usually produces nitrogen and oxygen as the major products
1. Name one substance that is used to remove carbon dioxide from the air before it is changed into liquid
2. Describe how nitrogen gas is obtained from the liquid air (boiling points nitrogen = -196 degrees oxygen =-183 degrees
Date posted:
April 10, 2018
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Answers (1)
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Explain how you would separate a mixture of nitrogen and oxygen given that their boiling points are -196^0c and 183^0c
(Solved)
Explain how you would separate a mixture of nitrogen and oxygen given that their boiling points are -196^0c and 183^0c.
Date posted:
April 10, 2018
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Answers (1)
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Carbon and silicon belong to the same group of the periodic table yet carbon (4) oxide is a solid with a high melting point. Explain...
(Solved)
Carbon and silicon belong to the same group of the periodic table yet carbon (4) oxide is a solid with a high melting point. Explain this difference
Date posted:
April 6, 2018
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Answers (1)
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Explain how pure nitrogen can be obtained from a mixture of nitrogen and oxygen.
(Solved)
Deals with separation of mixtures under fractional distillation
Date posted:
March 13, 2018
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Answers (1)
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Outline the physical properties of carbon (iv) oxide
(Solved)
Outline the physical properties of carbon (iv) oxide
Date posted:
February 28, 2018
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Answers (1)
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State the uses of carbon (ii) oxide.
(Solved)
State the uses of carbon (ii) oxide.
Date posted:
February 28, 2018
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Answers (1)
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Outline the physical properties of carbon (ii) oxide
(Solved)
Outline the physical properties of carbon (ii) oxide
Date posted:
February 28, 2018
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Answers (1)