Set Iv Objective Sem Ii

Set IV (One (1) Hour) Read the question carefully for four (4) times. Choose the BEST answer only. Good LuCK!!!... May Allah BLeSS u all always….. ő 1) Calculate ∆Ho Fe2O3 (s) + CO (g) → 2FeO (s) + CO2 (g) Given Fe2O3 (s) + 3CO (g) → 2Fe (s) + 3CO2 (g) Fe (s) + CO2 (g) → FeO (s) + CO (g) A. +59.8 kJ C. -10.3 kJ 2)

Fe3+ (aq) O2 (g) + Fe2+ (aq) Cr2+ (aq)

∆Ho = -26.8 kJ ∆Ho = +16.5 kJ

B. + 6.2 kJ D. -43.3 kJ Fe2+ (aq) H2O2 (ℓ) Fe (s) Cr (s)

+ 2e 2H+ + 2e + 2e + 2e

Eo = +0.77 V Eo = +0.68 V Eo = - 0.44 V Eo = - 1.91 V

Choose reaction that can occur spontaneously A. B. C. D. 3)

Cr2+ (aq) Cr2+ (aq) Cr2+ (aq) Fe (s)

+ + + +

2Fe2+ (aq) H2O2 (ℓ) Fe (s) 2H+ (aq)

Cr (s) + 2Fe3+ (aq) Cr (s) + O2 (g) + 2H+ (aq) 2+ Cr (s) + Fe (aq) + O2 (g) H2O2 (ℓ) + Fe2+ (aq)

A cell with Eocell = +1.10 V. Choose the electrode pair based on half-cell potential. K2+ (aq) L2+ (aq) M+ (aq) N+ (aq) A. B. C. D.

+ + + +

2e 2e e e - ve electrode L N K M

K (s) L (s) M (s) N (s)

Eo = +0.30 V Eo = - 0.30 V Eo = - 0.80 V Eo = - 1.90 V + ve electrode M M M K

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4)

2MnO4- (aq) + 6H+ aq) + 5H2O2 (aq)

2Mn2+(aq) + 8HO2 (ℓ) + 5O2(g)

The rate of water formation from the reaction is 0.035 M s-1. What is the rate of formation of Mn2+ ?

5)

A.

8.75 x 10-4 M s-1

B.

8.75 x 10-3 M s-1

C.

2.19 x 10-2 M s-1

D.

2.19 x 10-3 M s-1

H+ C12H22O17 + H2O 2C6H12O9 acidic hydrolysis of sucrose is 1st order reaction of 0.213 min-1. How long will 30% of 1 Kg sucrose react?

A. C. 6)

dipole-dipole attraction Hydrogen Bonding

B. D.

covalent bonding VDW’s Forces

CH3

CH3CH2CH2CH2CH2CH3

B. D. CH3-CH2(CH3)- CH2CH2CH2CH3

Name the compound, C6H14 that formed 5 different product when react with Cℓ2 gas in UV A. C.

9)

238.7 s 339.1 s

Which compound has 1st and 2nd carbon A. C.

8)

B. D.

Most strong interaction formed between neutral molecules A. C.

7)

749.1 s 100.5 s

CH3-CH2(CH3)- CH2(CH3)-CH3 B. CH3CH2CH2CH2CH2CH3 (CH3)3C-CH2CH3 D. CH3-CH2(CH3)- CH2CH2CH3

Type of reaction for C=C A. Electrophilic Addtition C. Nucleophilic Substitution

B. D.

Nucleophilic Addtition Electrophilic Substitution

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10)

C-Cl AlCl3

K

KMnO4

Cl2 FeCl3

L

Predict M

COOH

COOH

A.

M

B. Cl COOH

Cl

C.

D.

CH3

CH2Cl Cl

11)

4-chloro-4-ethyl-2-methylhexane can be prepared from following compound EXCEPT.. A. C.

12)

3-ethyl-5-methyl-2-hexene 2-ethyl-4-methylpentene

1-Bromobutane + X

Butan-1,2-diol Y KMnO4, cold KMnO4, cold O3, ZnCl2 KMnO4, cold

Compound that can formed cloudy solution immediately with Lucas Test A. C.

14)

3-ethyl-5-methyl-3-hexene 4-ethyl-2-methyl-2-hexene

Butene + Y

X EtOH H2SO4 NaNH2 KOH, EtOH

A. B. C. D. 13)

B. D.

hexene formic acid

B. D.

2-methyl-2-butanol cyclopentanol

Predict major product HOCH2

Cl

PCl3

Br

A. C.

? HOCH2

B. CH2

Br

D.

ClCH2

Cl

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15)

H2O, H+ of compound Z give

C-CN

16)

A.

COOH

B.

CH2CH2HN2

C.

CH2COOH

D.

CH2CONH2

Predict N structure

O

17)

LiAlH4 N

A.

HO

CH2OH

B.

HO

CH2

C.

O

CH3

D.

HO

CH3

acetone + CH3-CH2 -MgX + Hydrolysis A. C.

18)

CH3

2-methylbutanol 3-pentanol

? B. D.

2-pentanol 2-methy-2-butanol

CH3-CH2(OH)CH3-CH2 _______ soluble in H2O than CH3CH2(CH3)CH2CH3 CH3-CH2(OH)CH3-CH2 _______ soluble in H2O than CH3CH2COOH A. C.

19)

more, less less, more

B. D.

more, more less, less

B. D.

cyclohexanylcarboxylic acid cyclohexanol

select the most acidic compound A. C.

Phenol Benzoic acid

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20)

Select the suitable reagent to differentiate between these two structure H N

A. C. 21)

H2N

Br2 , H2O PhSoCl2 / OH- followed hydrolysis

B. D.

Tollen’s Reagent Chromic acid

Which acid amino has an isoelectric near pH 10? A. C.

22)

and

HO-Ph- CH2-CH(NH3+)COO- B. HOOC- CH2-CH2 CH(NH3+)COO+ + CH3-CH(NH3 )COO D. NH3 - CH2-CH2CH2-CH2-CH(NH3+)COO-

Which is polyamide A. C.

Proteins natural rubber

B. D.

Dacron Plastic

For question 23-30 choose your answer from the option given A B C I only I and II only II and III only 23)

The reagent needed to convert Br-CH2=CH2CH2CH3 to Br-CH2CH2CH2CH3 I II III

24)

H2, Pt KOH, EtOH HCl conc, ZnCl2

Which substituent is meta director in aromatic electrophilic substitution reaction I II III

25)

D I, II, and III

-CH3 -C N -COOH

compound that yield 2nd OH when react with CH3MgCl followed by acidification I II III

ethanal propanal 2-Butanone

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26)

In Condensation polymerization, two monomers react to form a larger molecule and eliminate a smaller molecule such as I II III

27)

H2O HCl CH3OH

This compound can form cis-trans isomers I II III

CH2CH= CH3 ClCH= CHCl Br CH3

28)

Factor that effect the rate of reaction I II III

29)

Concentration Temperature Pressure

Fe (s) | Fe2+ (aq) , Fe3+ (aq) || Ag+ (aq) | Ag (s) The cell potential above can be increase by I II III

30)

increase [Fe2+ ] increase [Fe3+ ] decrease [Ag+]

which species that ∆Hof = 0 I II III

O2 (g) Br2 (ℓ) H2O (ℓ) Buat semua anak didik… kami para pensyarah unit Kimia KMPk sentiasa mendoakan kejayaan anda di dunia dan di akhirat… Insya Allah panjang umur murah rezeki kita bersua lagi di lain waktu . Sekian… Wassalam

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