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- Multiple ChoicePlease save your changes before editing any questions.
Which of the following best defines the term 'salt'?
It is salty in taste
Contains sodium ions and chloride ions
It is an ionic compound
Formed when hydrogen ion in acid is replaced by a metal ion or ammonium ion
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is a soluble salt?
Calcium sulphate
Silver chloride
Sodium carbonate
Lead (II) sulphate
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is a salt and soluble in water?
Sodium hydroxide
Aluminium oxide
Magnesium nitrate
Calcium carbonate
- Multiple ChoicePlease save your changes before editing any questions.
The following salts are soluble except...
Copper(II) carbonate
Copper(II) sulphate
Copper(II) nitrate
Copper(II) chloride
- Multiple ChoicePlease save your changes before editing any questions.
Nitric acid will change to nitrate salt when hydrogen ions are replaced by... (More than one answer)
Copper(II) ion
Hydroxide ion
Carbonate ion
Ammonium ion
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following are suitable to prepare copper(II) chloride? (More than one answer)
Copper(II) nitrate and sodium chloride
Copper metal and hydrochloric acid
Copper(II) oxide and hydrochloric acid
Copper(II) carbonate and hydrochloric acid
- Multiple ChoicePlease save your changes before editing any questions.
When salt K is added into sulphuric acid, a gas is released which turns lime water cloudy. What is salt K?
Zinc nitrate
Calcium carbonate
Ammonium chloride
Copper(II) sulphate
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following are the products for the reaction between zinc powder and dilute nitric acid?
Zn(NO3)2
Zn(NO3)2 and H2O
Zn(NO3)2 and H2
Zn(NO3)2 , CO2 and H2O
- Multiple ChoicePlease save your changes before editing any questions.
What is the process shown in the above diagram?
Purification of insoluble salt
Purification of soluble salt
Preparation of insoluble salt
Preparation of soluble salt
- Multiple ChoicePlease save your changes before editing any questions.
Which pair of solutions when combined will produce an insoluble salt?
Hydrochloric acid and magnesium nitrate
Sodium chloride and iron(II) sulphate
Nitric acid and potassium carbonate
Barium chloride and sodium sulphate
- Multiple ChoicePlease save your changes before editing any questions.
Insoluble salt can be prepared through...
Neutralization
Crystallisation
Dilution process
Double decomposition
- Multiple ChoicePlease save your changes before editing any questions.
Which equation represent double decomposition reaction that forms a precipitate?
CaO + H2SO4 --> CaSO4 + H2O
AgNO3 + NaCl --> AgCl + NaNO3
Pb + HNO3 --> Pb(NO3)2 + H2
Ca(OH)2 + 2HCl --> CaCl2 + 2H2O
- Multiple ChoicePlease save your changes before editing any questions.
Salt X releases brown gas when heated strongly. The residue of salt X after heating is yellow when hot and white when cold. What is salt X?
Zinc carbonate
Zinc nitrate
Lead(II) nitrate
Lead(II) carbonate
- Multiple ChoicePlease save your changes before editing any questions.
What is the colour of residue when copper(II) carbonate is heated strongly?
Black
Brown
Green
Blue
- Multiple ChoicePlease save your changes before editing any questions.
When potassium iodide is added into lead(II) nitrate, a yellow precipitate is formed. What is the name of the yellow precipitate?
Potassium sulphate
Potassium nitrate
Lead(II) iodide
Lead(II) chloride
- Multiple ChoicePlease save your changes before editing any questions.
When calcium carbonate is heated strongly, colourless gas which is carbon dioxide is released. How to confirm the colourless gas is carbon dioxide?
Put moist red litmus paper at the mouth of the test tube
Put glowing wooden splinter at the mouth of the test tube
Flow the gas into test tube containing lime water
Put burning wooden splinter at the mouth of the test tube
- Multiple ChoicePlease save your changes before editing any questions.
When ammonium chloride is heated, a student put moist red litmus paper at the mouth of the test tube to test the gas released. What happen to the litmus paper?
Does not change colour
Turns to white
Turns to black
Turns to blue
- Multiple ChoicePlease save your changes before editing any questions.
What anion can be identified from the test shown in the above diagram?
Nitrate
Carbonate
Chloride
Sulphate
- Multiple ChoicePlease save your changes before editing any questions.
Based on the table above, which ions may be present in the salt?
Zn2+ ion
Pb2+ ion
Cu2+ ion
Mg2+ ion
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following ions form a white precipitate that does not dissolve in excess NaOH solution and no precipitate when added with NH3 solution?
Ca2+ ion
Al3+ ion
Mg2+ ion
Pb2+ ion
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following ions form a precipitate that dissolve in excess ammonia solution? (More than one answer)
Cu2+ ion
Al3+ ion
Zn2+ ion
Pb2+ ion
- Multiple ChoicePlease save your changes before editing any questions.
When NaOH solution is added into a salt solution, brown precipitate is formed. What is other method that can be done next to confirm the presence of the cation?
Add potassium iodide into the salt solution
Add Nessler reagent to the salt solution
Heat up the salt solution
Add potassium thiocyanate into the salt solution
- Multiple ChoicePlease save your changes before editing any questions.
The above table are the results for anion and cation test to identify salt G. Based on the results, what is salt G?
Magnesium chloride
Zinc carbonate
Aluminium sulphate
Calcium nitrate
- Multiple ChoicePlease save your changes before editing any questions.
You were asked by your teacher to verify the cation in a sample of iron(II) chloride solution. Which of the following substance would you use?
Nitric acid
Nessler reagent
Sodium hydroxide solution
Hydrochloric acid and barium chloride
- Multiple ChoicePlease save your changes before editing any questions.
You were asked by your teacher to verify the anion in a sample of ammonium chloride solution. Which of the following substance would you use?
Nitric acid and silver nitrate
Hydrochloric acid and barium chloride
Sulphuric acid and iron(II) sulphate
Nitric acid and barium nitrate
- Multiple ChoicePlease save your changes before editing any questions.
Based on the above diagram, Z could be...
Aluminium sulphate
Calcium chloride
Magnesium nitrate
Zinc sulphate
- Multiple ChoicePlease save your changes before editing any questions.
What happened when potassium thiocyanate is added into salt solution containing Fe3+ ion?
Dark blue precipitate is formed
Blood red solution is formed
Brown precipitate is formed
Dark blue solution is formed
- Multiple ChoicePlease save your changes before editing any questions.
What is the colour of solid magnesium carbonate?
Green
Blue
Black
White
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following salt is prepared through titration method?
Copper(II) carbonate
Zinc chloride
Iron(II) sulphate
Potassium nitrate
- Multiple ChoicePlease save your changes before editing any questions.
Diagram above shows the preparation of copper(II) sulphate salt. After copper(II) oxide is being added into the acid and stirred, the mixture is filtered. What is the next step after the mixture is filtered?
Heat the filtrate solution until saturated
Dry the salt between two filter papers
Leave the salt for a few days
Cool the salt to room temperature