Chemistry for Applied Biology : Assignment

Added on - 04 Jun 2020

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Chemistry for applied biology
Table of ContentsTASK 1 (AC: 1.1, 1.2, 1.3)..............................................................................................................1A) Physical properties of substances...........................................................................................1B) Enthalpy changes.................................................................................................................5C) Factors affecting the rate of sucrose break down reaction....................................................6TASK 2 (AC: 2.1, 2.2, 2.3, 2.4).......................................................................................................61)................................................................................................................................................6a) Enthalpy of formation and enthalpy change for the reaction..................................................6b) Values of ΔSƟ at 298K..........................................................................................................7c) Values of SƟ for all other substances and ΔSƟ for the system............................................7d) ΔSƟ and ΔGƟ......................................................................................................................7e) Feasibility of the process and the assumptions.......................................................................72) Redox Reactions.....................................................................................................................73) Using oxidation numbers for deciding the redox nature of the reaction or process...............84) Feasibility of the process........................................................................................................9TASK 3 (AC: 3.1, 3.2, 3.3, 3.4).......................................................................................................9A) Experimental work on equilibrium system............................................................................9B) Shift in equilibrium position for favouring the formation of products................................10C) Monoprotic weak acid..........................................................................................................10TASK 4 (AC: 4.1,4.2, 4.3, 4.4, 4.5)...............................................................................................11A) Relation of shapes and bonding in molecules.....................................................................11B) Structures and systematic names.........................................................................................11C) Reactions and their relation to structural formulae.............................................................12D) Isomerism displayed...........................................................................................................13
TASK 1 (AC: 1.1, 1.2, 1.3)A) Physical properties of substancesa) WaterThe molecular formula for water is H2O and the following is the structural formuladepicting the bonds and molecular arrangement of the molecules of water.The shape of this molecular is contemplated as bent shape and bonds formed in thisstructure are covalent bonds. These are quite strong but have weak force of attraction. Thisproperty relates to the flexibility of water in having no specific shape. The fluidity is acquireddue to this nature of the bonds. There are two lone pairs denoted over oxygen. Water is found inliquid form. Its gaseous form is known as water vapour while the solid version is ice.Water hasthree forms which includes liquid, solid (ice) and gaseous as water vapour. The boiling point ofwater is 100°C and freezing point is 0°C. The cohesiveness for water is very high whileviscosity is low because it has high flowing capacity.b) MethaneThe chemical formula of methane is CH4and the following is the structural formula:1Illustration1: Structural formula ofwater
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