Page 128 - Chemistry

c) Study the scheme below and use it to answer the questions that follow:-
H H
Step Step
CH 3CH 2CH 3 CH 3CH = CH 2 C – C
V W
P CH 3 H n
K
CH 3CH 2CH 2OH

Step R
K 2CO 3 NaOH
Gas F CH 3CH 2COOH CH 3CH 2COONa
Step J NaOH
Step X Heat

CH 3CH 2COOCH 3 Product T
G + Na 2CO 3

i) Name the following compounds:-
I. Product T ………………………… II. K ………
ii) State one common physical property of substance G
iii) State the type of reaction that occurred in step J
iv) Give one use of substance K
v) Write an equation for the combustion of compound P
vi) Explain how compounds CH 3CH 2COOH and CH 3CH 2CH 2OH can be distinguished chemically
vii) If a polymer K has relative molecular mass of 12,600, calculate the value of n (H=1 C =12)
14. Study the scheme given below and answer the questions that follow:-

Polymer Q Polymerization Compound P Step III CH 3CH 2CH 3
H 2 (g) Ni
High temp
o
Conc. H 2SO 4 180 C
Na(s) Step I
CH 3CH 2CH 2ONa + H 2 Propan-l-ol Propylethanoate

Step II

CH 3CH 2COOH

Na 2CO 3(aq)

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Solution T + CO 2 (g)