Give the names and formulae of two strong acids and two weak acids.
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Give the names and formulae of two (i) strong monobasic acids (ii) weak dibasic acids
(i) Hydrochloric acid(HCl),nitric acid(HNO3) (ii) Carbonic acid (H2CO3),oxalic acid(C2H2O4)
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(a) What are organic acids and mineral acids ? (b) Give two examples each of organic acids and mineral acids.
(a) Organic acids are acids present in plant materials and animals. These are naturally occuring acids. A mineral acid (or inorganic acid) is an acid derived from one or more minerals...
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What is meant by strong acids and weak acids ? Classify the following into strong acids and weak acids :
A strong acid is one that completely ionises in water to form a large amount of hydrogen ions whereas a weak acid only partially ionises in water and thus produces...
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What is meant by strong bases and weak bases ? Classify the following into strong bases and weak bases :
Strong base: A base which completely ionises in water and produces a large amount of hydroxide ions. Weak base: A base which is partially ionised in water and produces a small...
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(a) What is a salt ? Give the names and formulae of any two salts. Also name the acids and bases
(a) A salt is a compound formed from an acid by the replacement of the hydrogen in the acid by a metal. Example: Sodium chloride – NaCl; It is obtained from...
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Give the names and formulae of (a) two acidic oxides, and (b) two basic oxides.
(a) Carbon dioxide and sulphur dioxide. (b) Sodium oxide and magnesium oxide.
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(a) Give the names and formulae of one metal chloride and one non-metal chloride. (b) State an important property in
Non-metal chloride: Carbon tetrachloride, CCl 4 (b) Sodium chloride solution conducts electricity whereas carbon tetrachlori de does not conduct electricity. (c) Sodium chloride is an ionic compoun d whereas carbon tetrachloride is...
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(a) Give IUPAC names and formulae of an organic compound containing single bonds and the
(a) Methane (single bond): CH4 Ethyne (triple bond): C2H2 (b) Benzene: C6H6 (c) Isobutene
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What do you understand by an alkali? Give two examples of: (a) strong alkalis (b) weak alkalis
An alkali is a basic hydroxide which when dissolved in water produces hydroxyl ions (OH-) as the only negatively charged ions. (a) Strong alkalis: Sodium hydroxide , Potassium hydroxide (b) Weak alkalis:...
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Match the formulas of the following – acids – with their correct names Acids Names – (a) HCI (1) Carbonic acid
Acids Names – (d) H2CO3 (1) Carbonic acid (c) H2SO4 (2) Sulphuric acid (a) HCl (3) Hydrochloric acid (b) HNO3 (4) Nitric acid
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