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WorksheetsSalts
Total questions: 14
Worksheet time: 8mins
Which of the following ions produce a white precipitate that is insoluble in excess ammonia solution?
Ca2+
Zn2+
Mg2+
Which of the following salts are prepared by double decomposition reaction?
I. Calcium sulphate
II. Potassium carbonate
III. Silver chloride
IV. Barium sulphate
I, II, III
II, III
II, III,IV
I, III and IV
How can you convert zinc oxide to zinc carbonate?
Add zinc oxide in dilute hydrochloric acid. Then add excess sodium carbonate to the resulting solution
Pass carbon dioxide gas over zinc oxide powder
Heat a mixture of carbon and zinc oxide powder
Add zinc oxide powder to sodium carbonate solution
Which of the following reactions form only salt and hydrogen gas?
zinc carbonate and hydrochloric acid
magnesium and sulphuric acid
copper(II) oxide and nitric acid
calcium hydroxide and hydrochloric acid
Which of the following is the best description of a salt?
It is composed of discrete molecules attracted by weak Van der Waals forces of attraction
It is formed when metal reacts with an alkali
It is formed when the hydrogen ions in an acid is replaced by metal or ammonium ion
It is used mainly as food preservatives
Potassium chromate solution reacts with solution L to form a yellow precipitate. What could be L contains?
Zn2+
Ca2+
Mg2+
Pb2+
When compound M is heated, a brown gas is evolved and black residue is left behind. M could be
zinc carbonate
copper(II) nitrate
lead(II) nitrate
magnesium nitrate
Hydrochloric acid and nitric acid can be distinguished by adding
silver nitrate
sodium hydroxide
zinc oxide
lead(II) nitrate
When sodium hydroxide is added until in excess to a solution, a white precipitate soluble in excess is formed. The ions that could be present in the solution are
Al3+
Zn2+
Mg2+
Pb2+
Solution P forms white precipitate with lead(II) nitate. Which of the following ions could be present in solution P?
I Chloride
II Sulphate
III Carbonate
IV Iodide
I and II
I and IV
I, II and III
I, II, III and IV
Which of the following statements is true about all bases?
Dissolve in water
Have alkaline properties
React with acids
Contain hydroxide ions
The formula for a sulphate ion is SO4 2- and for a nitrate is NO3 - . If the formula of the sulphate salt of M is MSO4, what is the formula of the nitrate salt
MNO3
M2NO3
M(NO3)2
M(NO3)3
When potassium thiocyanate solution is added to solution M, a blood red solution is formed. Solution M contains
Fe2+
Fe3+
Pb2+
Cu2+
Which substance is a base?
Sodium chloride
Zinc sulphate
Carbon dioxide
Magnesium oxide
