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Question
Carbon dioxide and sulphur dioxide gas can be distinguished by using ______.
Options
moist blue litmus paper
lime water
acidified potassium dichromate paper
none of the above
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Solution
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RELATED QUESTIONS
What kind of salt prepared by direct combination. Write an equation for the reaction that takes place in preparing the salt you have named.
How is the following salt prepared:
Copper (II) sulphate from copper (II) oxide?
Describe giving all practical details, how would you prepare:
lead sulphate from metallic lead.
Give the preparation of the salt given in the left column by matching with the methods given in the right column. Write balanced equations for each preparation.
| Salt | Method of Preparation |
| Zinc sulphate | Precipitation |
| Ferrous sulphide | Displacement |
| Barium sulphate | Neutralization |
| Sodium sulphate | Synthesis |
State how would you prepare copper (II) oxide from
Copper Carbonate
Some methods used for the laboratory preparation of salts are:
(a) Metal + acid
(b) Carbonate + acid
(c) Precipitation
(d) Direct combination
(e) Titration
Copy and complete the following table :
| Salt | Method of Preparation |
| Ammonium Sulphate | |
| Calcium carbonate | |
| Iron (III) chloride | |
| Lead nitrate | |
| Zinc sulphate |
Choosing the correct words given in brackets, complete the sentence given below: Lead sulphate from lead nitrate.
What is the difference between the chemical nature of an aqueous solution of HCl and an aqueous solution of NH3
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A – direct combination of two elements.
B – reaction of a dilute acid with a metal.
C – reaction of a dilute acid with an insoluble base.
D – titration of a dilute acid with a solution of soluble base.
E – reaction of two solutions of salts to form a precipitate.
Choose from the above list A to E, the best method of preparing the following salt by giving a suitable equation in the following case:
Copper sulphate.
Select the word/s given which are required to correctly complete the blanks.
If a piece of magnesium was put into a solution M, ______ gas would be evolved.
