| 1 |
What is the POH of a 0.02 M Ca(OH)2? |
1.698
1.397
12.31
12.61
|
| 2 |
The reaction between an acid and a base produces. |
Salts and water
Salt and gas
Salt and an acid
Salt and an base
|
| 3 |
In the preparation of insoluble salts, which one of the facts is incorrect? |
Two soluble salts are mixed
Two in soluble salts are mixed .
One of the salt produced is insoluble
Both of the salts produced are insoluble
|
| 4 |
Dilute acids react with carbonates to produce the given products except. |
Salt
Water
Hydrogen
Carbon dioxide
|
| 5 |
A salt always |
Contain ions
Contains water of crystallization
Dissolves in water
Forms crystals which conduct electricity
|
| 6 |
If a liquid has a pH of 7 then it must. |
Be a colourless and odourless liquid
Freeze at 0 <sup>o</sup>C and boil at 100 <sup>o</sup>C
Be natural
Be a solution containing water
|
| 7 |
A salt is not composed of |
A metallic cation
Non -metallic anion
an anion of a base
An anion of an acid
|
| 8 |
Acetic acid is a weak acid because it. |
Is used in cooking and flavouring food.
Has very low pH
Is not fully ionized
Does not contain any hydrogen ions.
|
| 9 |
Lewis acid-base concept have the following characteristics except: |
formation of an adduct
Formation of a co-ordinate covalent bound
Donation and acceptance of an electron pair
Donation and acceptance of a proton
|
| 10 |
A base is a substance which neutralizes and acid. Which of these substances is not a base? |
aqueous ammonia
Sodium chloride
Sodium carbonate
Calcium oxide
|
| 11 |
Which chemical is called king of chemicals? |
KNO<sub>3</sub>
H<sub>2</sub>SO<sub>4</sub>
HCl
NHO<sub>3</sub>
|
| 12 |
Equilibrium constant value "K" is equal to: |
Kt / Kr
Ki / Kr
Kc / Qc
Qc /Kc
|
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