Chemistry (1ai) Ionic bond is the bond that exists between metallic and non-metallic atoms. (1aii) I ionic bond, II ionic and covalent bond +1y2+2x-2*3=0 (1bi) Na2S2O3, 2+2x-6=0 2x=6-2 X=4/2=2 :. the oxidation number of sulphur in Na2S2O3 is 2 (1c) Faradays first law states that the quantity of substance deposited or liberated during electrolysis is directly proportional to the amount of current passing through the electrolyte at constant tempereture an pressure at a given time i.e Q=it (1d) i. SO3 ii.NaO (1e) i. Exothermic ii. Endothermic (1f) i. It turns blue litmus paper red ii. It turns red litmus to red (1g)Efflorescence are substances when exposed to the atmosphere, they lose their water of crystalization to the atmosphere. (1h) (i.) It is used in making typewriter ribbon (ii.) for making shoe polish (iii.) For making carbon black (1i) i. It is used for hardening of oil ii. It is used in breaking heavy hydrocarbon light fraction iii. It is used in producing esters for making soap (1j) Recall, m= MQ/nF, where m= mass of sliver deposited. Ag^+ + e^- --> Ag n=1, m/M=No of moles = 10920/1*96500 m/M=No of moles = 0.113 moles. ==================== PLS NOTE THAT ^ MEANS RAISE TO POWER. ====================
Posted on: Tue, 15 Apr 2014 14:14:00 +0000
Trending Topics
Recently Viewed Topics
© 2015