Give one example each of
(i) addition polymers,
(ii) condensation polymers,
(iii) copolymers.
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Describe the effect of a) addition of H2 b) addition of CH3OH
(a) According to Le Chatelier’s principle, on addition of H2, the equilibrium of the given reaction will shift in the forward direction. (b) On addition of CH3OH, the equilibrium will shift...
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Describe the effect of a) addition of H2 b) addition of CH3OH
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How are the following colloids different from each other in respect of dispersion medium and dispersed medium ? Give one example of each type.
[Hint : D.P. D.M. Example (a) Solid/liquid ...
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Can a copolymer be formed in both addition and condensation polymerisation ? Explain with examples.
Yes. Buna-S, Buna-N : Addition polymer Nylon-6, 6, terylene : Condensation
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State for each of the following whether it is due to evaporation or condensation:
(a) Water drops appear on the outer surface of a glass containing cold water. Condensation (b) Steam rising from wet clothes while they are ironed. Evaporation (c) Fog appearing on a cold...
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What are lyophilic and lyophobic sols? Give one example of each type. Which one of these two types of sols is easily coagulated and why?
Lyophilic sols: Lyophilic sols are those sols in which the particles of dispersed phase have great affinity for the dispersion medium, e.g., sols of gum, gelatine, starch, etc. Lyophobic sols:...
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How are the following colloids different from each other in respect of dispersion medium and dispersed phase? Give one example of each type.
Type of Colloid Dispersed Phase Dispersion medium Example Aerosol Solid or liquid Gas Smoke, Fog, Cloud Hydrosol Solid Water Starch sol, Protein sol Emulsion Liquid Liquid Milk, hair cream
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Differentiate between the modes of formation of an addition polymer and a condensation polymer.
Addition Polymerisation Condensation Polymerisation (i) Monomers are unsaturated molecules (i) Monomers have di or polyfunctional groups. (ii) Involves chain reaction (ii) Does not involve chain reaction. (iii) Formed by adding monomers to a growing chain without...
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How are the following colloids different from each other in respect of their dispersion medium and dispersed phase? Give one example of each.
Aerosol Emulsion Hydrosol 1. Sols in which the dispersion medium is gas and dispersed phase is solid or liquid. For example: Smoke, d 1. A colloidal system in which dispersion medium and dispersed phase...
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Describe the effect of the following (i) Addition OfH2 (ii) Addition of CH3OH
(i) equilibrium will shift in forward direction (ii) Equilibrium will shift in backward direction. (iii) Equilibrium will shift in backward direction.
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