Assignment 4 - CHM 151 (General Chemistry) Assignment 4...

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CHM 151 (General Chemistry) Assignment 4 (Due date: 16-10-2008) Name: ID: 1. Use Lewis symbols to represent formation of the ionic compounds between (i) calcium and bromine atoms (ii) barium and oxygen atoms (iii) aluminium and sulphur atoms 2. Write the simplest Lewis structure for each of following molecules. Try to comment on any unusual features of the structure. (i) ClF 3 (ii) BCl 3 (iii) SeF 4 (iv) NO (v) CO 3 2-
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3. Consider the species NO 2 - (resonance), SCl 4 (nonoctet) , and SF 6 (nonoctet). (i) Draw the Lewis structures of these species. (ii) Name the geometries of these species and state the bond angles. (iii) Classify each species as being polar or nonpolar. 4. Write the rate expression for the following reactions in terms of the disappearance of the reactants and the appearance of the products. (i) I - (aq) + OCl - (aq) → Cl - (aq) + OI - (aq) (ii) 3O 2 (g) → 2O 3 (g) (iii) 4NH 3 (g) + 5O 2 (g) → 4NO(g) + 6H 2 O(g)
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5. The reaction of nitric oxide with hydrogen at 1280
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Assignment 4 - CHM 151 (General Chemistry) Assignment 4...

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