1i.white paper, burette, retort stand, flat
bottom flask
ii. Parallax error, instrumental error,personal
error
1b
(CA*22.5)/(0.1*25)=1/1
Ca=0.111 mol/dm3
1bii. 0.111= 4.05/rmm
rmm =36.5g/mol
1ci. By mixing the pellets of 0.28g in water
ii. Preparation of salts
production of fertilizer
(2ai) Green ppt green ppt soluble in excess Fe2+ confirmed
(ii) Fe2+ confirmed
(iii) Brown ppt
(iv) White ppt
(v) Zn2+, pb2+, al3+ suspected
(vi) Zn2+ confirmed
(vii) White ppt - zn2+ confirmed
(2b) Release of ammonia.
(3ai) chromatography ii. Four
iii. Cottonwool
iv. IV
3bi. CuSO4
ii. CaO
(C)
i Silica gel and CaO
ii. drying agent as absorbent
(9i.)white paper, burette, retort stand, flat bottom flask
(ii) Parallax error, instrumental error,personal error
(9b)
(CA×11.4)/(9.9×14)=9/9
Ca=9.999 mol/dm2.
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