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प्रश्न
Distinguish between the given pairs of compounds using the test given within brackets:
A lead salt and a zinc salt (using excess ammonium hydroxide)
उत्तर
On addition of the excess of ammonium hydroxide to lead nitrate, a chalky white ppt. of Pb
(OH)2 is formed. On addition of the excess of ammonium hydroxide to zinc sulfate, a
white gelatinous ppt. of Zn(OH)2 is formed which is soluble.
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संबंधित प्रश्न
Write a balanced chemical equation for the preparation of the following salts
Copper carbonate
How is the following salt prepared:
Magnesium carbonate from magnesium chloride.
Describe giving all practical details, how would you prepare:
lead sulphate from metallic lead.
State how would you prepare copper (II) oxide from
Copper Carbonate
Write equation for the laboratory preparation of the following salt, using sulphuric acid: Iron (II) sulphate from the iron.
Choosing the correct words given in brackets, complete the sentence given below: Lead sulphate from lead nitrate.
Which of the following methods, (a), (b), (c), (d) or (e) is generally used for preparing the chlorides listed below from (i) to (v). Answer by writing down the chloride and the letter pertaining to the corresponding method. Each letter is to be used only once.
(a) Action of an acid on a metal.
(b) Action of an acid on an oxide or carbonate.
(c) Direct combination.
(d) Neutralization of an alkali by an acid.
(e) Precipitation (double decomposition).
(i) copper(II) chloride.
(ii) iron(II) chloride.
(iii) iron(IIl) chloride.
(iv) lead (II) chloride.
(v) sodium chloride.
The diagram given below is to prepare iron (III) chloride in the laboratory.
(i) What is substance B?
(ii) What is the purpose of B?
(iii)Why is iron (III) chloride to be stored in a closed container?
(iv) Write the equation for the reaction between iron and chloride ?
Give the equation for the preparation of the following salt from the starting material given.
Iron (III) Chloride from Iron
Explain the following method with example.
Direct combination
