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Q1— Section header —
1.1Write brief notes on covalent compound with reference to:
1.1.3structure conduction of electricity solubility (4\ (2\ (2\
1.2Name TWO examples of covalent compoun ds. (2\
1.3Name THREE conditions under which an elec trovalent compound is likely to be formed. (3\
1.4Identify the type of bonding that occurred in each of the following: 1. .1 Fe 1. .2 HNO
1.5Define Sidwick and Powell 's theory (3\
1.6During the formation of sodium chloride five steps occur. With the aid of chemical reactio differentiate between sublimation and first ionisation energy. (4\ [25]25
Q2— Section header —
2.1Study the given chemical compound with the formula ClF
2.1.1Write down the general formula for this compound. (2\
2.1.2Name this compound. 2\
2.1.3Draw a line structure for this compound and indicate the lone pairs of electrons. (4\
2.1.4What is the shape of the ClF molecule? (1\
2.1.5How many bonding pair does ClF molecule have? (1\
2.1.6Does this compound obey the Octet rule? Motivate your answer. (2\
2.1.7How many valence electrons does ClF molecule have? (1\ 15040004
2.2Given : HCl (aq\ + H (l\
2.2.1Provide the chemical name of Cl (1\
2.2.2Is HC l an ionic, covalent or interstitional hydride? (1\
2.2.3Explain why HCl is regarded as an Arrhenius acid in the above reaction? (2\
2.2.4Write down the K for this expression. (3\
2.2.5Is the value big or small ? Explain your answe r. (2\
2.2.6Indicate the conjugate acid base pairs. (2\
2.2.7Which acid is the strongest between HCl or HNO (1\ [25]25
Q3— Section header —
3.1Oxygen can be prepared by the thermal decomposition of peroxide. Write down the balance equati on for this reaction. (3\
3.2Name TWO properties of oxygen. (2\
3.3Briefly explain how you would prepare ozone (O \the laboratory. (2\
3.4Name ONE example of each of the following oxides:
3.4.1cidic oxide
3.4.2eutral o xide
3.4.3mphoteric oxide
3.4.4ery basic oxide (4 1\ (4
3.5Ammonia ( NH \is prepared in the laboratory by reacting calcium hydroxide and ammonium chloride. Write down the balanced chemical reaction. (5\
3.6Name TWO prop erties of nitrogen. (2\
3.7Name THREE methods which can be used to remove permanent hardness in water. (3\
3.8Ammonia (NH \repared in the industr using nitrogen and hydrogen. Name the process and write down the balanced chemical equation (4\ [25]25
Q4— Section header —
4.1Write down the balanced reaction that occurs during the production of carbon tetrachloride (CCl (4\
4.2List THREE isotopes of hydrogen. (3\
4.3Write down the balance reaction of carbon with fluoride and name the product formed. (4\
4.4Provide the correct hydride/ carbide of each of the following :
4.4.1CaC
4.4.2Ni
4.4.3TiH
4.4.4(4 1\ (4
4.5Name TWO examples of covalent hydride that are electron deficient. (2\
4.6Give the chemica l name of each of the following
4.6.2OH
4.6.3CO (3 1\
4.7Complete the following reactions :
4.7.1C + 2H SO (3\
4.7.2NiO + CO (2\ [25] TOTAL : 100 1504000425