- Add ether to the mixture and stir,B dissolves
- Filter to obtain A and C as a residue
- Add alcohol to the residue C dissolves
- Filter and evaporate the filtrate to dryness.
sharon kalunda answered the question on May 21, 2019 at 07:29
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a) Explain how the two products, NaHCO3 and NH4Cl are separated....(Solved)
The chemical equations below are the main reactions in large scale manufacture of sodium carbonate.
a) Explain how the two products, NaHCO3 and NH4Cl are separated.
b)How is sodium carbonate finally obtained?
c) Explain how ammonia is recovered and recycled?
Date posted: May 21, 2019. Answers (1)
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Calculate the relative atomic mass of X.(Solved)
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Calculate the relative atomic mass of X.
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(i) Select any pair that would react to form a solution of pH 7
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Date posted: May 21, 2019. Answers (1)
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.
Suggest two ways of increasing the yield of A2B.
Date posted: May 21, 2019. Answers (1)
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solution. 50cm3 of the solution required 50cm3 of 2.0M nitric acid for...(Solved)
D grams of potassium hydroxide were dissolved in distilled water to make 100cm3 of
solution. 50cm3 of the solution required 50cm3 of 2.0M nitric acid for complete neutralization.Calculate the mass D of potassium hydroxide.
(relative formula of KOH=56)
Date posted: May 21, 2019. Answers (1)
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Date posted: May 21, 2019. Answers (1)
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Date posted: May 21, 2019. Answers (1)
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Date posted: May 21, 2019. Answers (1)
- Using reagents provided only, explain by means of balanced chemical equations how you
could prepare a salt of Zinc carbonate solid.
Zinc powder
Nitric (V) acid...(Solved)
Using reagents provided only, explain by means of balanced chemical equations how you
could prepare a salt of Zinc carbonate solid.
Zinc powder
Nitric (V) acid (dilute)
Water
Solid sodium carbonate
Date posted: May 21, 2019. Answers (1)
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Determine the number of protons and neutrons in the nuclide.(Solved)
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Determine the number of protons and neutrons in the nuclide.
Date posted: May 21, 2019. Answers (1)
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(i) Volume of chlorine at (r.t.p) required to react with 3g of Aluminium (Molar gas volume at r.t.p =...(Solved)
Given the equation for reaction below
Calculate
(i) Volume of chlorine at (r.t.p) required to react with 3g of Aluminium (Molar gas volume at r.t.p = 24litres, Al = 27, Cl = 35.5).
(ii) Mass of Aluminium chloride formed.
Date posted: May 21, 2019. Answers (1)
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Mass of evaporating dish = 23.0g
Mass of evaporating dish + sample of saturated...(Solved)
Calculate the solubility of sugar in water at 40oC from the following information.
Mass of evaporating dish = 23.0g
Mass of evaporating dish + sample of saturated solution = 192.0g
Mass of evaporation dish + solid after evaporating of solution + 142.0g
Date posted: May 21, 2019. Answers (1)
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Date posted: May 21, 2019. Answers (1)
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(i) Write an...(Solved)
The apparatus below was a set up to show the catalytic oxidation of ammonia. Study the diagram and answer the questions that follow.
(i) Write an equation for the reaction that takes place in the gas jar.
(ii) Why is it necessary to have a hot nichrome wire in the gas jar.
Date posted: May 21, 2019. Answers (1)
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Identify:
Gas P
Solid R
Solid T .
Liquid S(Solved)
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Identify:
Gas P
Solid R
Solid T .
Liquid S
Date posted: May 21, 2019. Answers (1)
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Date posted: May 21, 2019. Answers (1)
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(i) To what terminal of the power source is the key connected
(ii) Name the most suitable material for electrode K
(iii) Write the
(iv) If 3A power source was used for 5 hours, calculate the increase in mass of the Key.
( Ag = 108, 1 Fa=96500C)
Date posted: May 21, 2019. Answers (1)
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(i) Solution
(ii) A metal(Solved)
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(i) Solution
(ii) A metal
Date posted: May 21, 2019. Answers (1)