Chemistry
Classify the following reactions into
(a) Direct combination
(b) Decomposition
(c) Displacement
(d) Double decomposition
The reactions are
(i) Zinc hydroxide on heating gives zinc oxide & water
(ii) Zinc reacts with copper [II] sulphate to give zinc sulphate & copper
(iii) Zinc sulphate reacts with ammonium hydroxide to give ammonium sulphate & zinc hydroxide
(iv) Molten zinc at high temperatures, burns in air to give zinc oxide.
Related Questions
Differentiate between Direct combination reaction & a decomposition reaction.
Differentiate between Displacement reaction & a neutralization reaction.
Give balanced equations for -
(i) A direct combination reaction involving two elements, one of which is a non-metal.
(ii) A thermal decomposition reaction involving heat on limestone [calcium carbonate].
(iii) An electrolytic decomposition reaction involving a neutral liquid.
(iv) A displacement reaction involving a metal above hydrogen in the activity series with copper [II] sulphate solution.
(v) A double decomposition neutralization reaction involving an acid & a base.
(vi) A white precipitate obtained during a double decomposition reaction involving a silver salt with a sodium salt.
State what is meant by 'reactivity series of metals'. With reference to -
(a) Water
(b) Acids
explain with suitable examples how the reactivity of the metals could be differentiated.