A reaction scheme is shown in Fig. 7.1. The reagents needed for reaction 2 and reaction 3 are stated. Reaction 5 takes place when C2H5NH2 is mixed with compound V. No special conditions are required. [Figure 7.1]

1. (a)Identify compound U which contains only three elements.[1]
2. (b)Describe the reagents and conditions for reaction 1.[1]
3. (c)Identify compound V.[1]
4. (d)Complete the equation for reaction 3. CH3COOH + SOC2 → ______[1]
5. (e)Identify compound W.[1]
6. (f)Describe the conditions for reaction 4.[1]
7. (g)Suggest the reagent needed for reaction 6.[1]
8. (h)Complete Table 7.1 by adding the reaction numbers, 1, 2, 3, 4, 5 and 6, to the right-hand column. Use the reaction numbers given in Fig. 7.1. Each of the numbers 1, 2, 3, 4, 5 and 6 should be used once only. Table 7.1 type of reaction reaction number(s) hydrolysis addition reduction substitution[4]
9. (i)Compare the basicities of C2H5NHCOCH3, C2H5NHC2H5 and NH3. Explain your answer. most basic least basic[4]

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