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A water sample is not alkaline to phenolphthalein. However, 100 mL of the sample on titration with 0.02 N HCl required 16.0 mL to obtain end point using methyl orange as indicator. What are the types and amount of alkalinity present in the sample?
Which one of the following compounds will NOT be attacked by a nucleophile?
A. CH3CHBrCH3
B. CH3CHCHCH2CH3
C. CH3COCl
D. CH3CH2CH2CHO
E. CH3CH2Cl
When 3-methylpentan-3-ol undergoes an elimination reaction in the presence of
hot concentrated H2SO4, the product which is MOST likely to form is:
A. 3-methylpent-3-ene
B. 2-ethylbut-2-ene
C. 3-methylpentane
D. 3-pentanone
E. 3-methylpent-2-ene
Which one of the following gives the MOST likely products for the reaction
between 1-chloropropane and potassium hydroxide, which occurs at 25 °C?
Products
A. CH3CH2CH3 + Cl- + OH- + K+
B. CH3CHCH3 + Cl- + H2O + K+
C. CH3CH(OH)CH3 + Cl- + H+
D. CH3CH2CH2OH + Cl-+ K+
E. CH3CHCHCl + K+ + OH- + H+
Which one of the following is a nucleophile?
A. Hydronium ion
B. Hydroxide ion
C. Nitronium ion, NO2+
D. Ammonium ion
E. CH3CH2+
Which one of the following substances is more likely to dissolve in water?
A. CHCl3
B. CH3(CH2)9CHO
C. CH3(CH2)8CH2OH
D. HOCH2CH2OH
E. CCl4
.
A. Benzene contains a six-membered ring with alternating shorter C=C
bonds and longer C−C bonds.
B. Each carbon atom in a benzene ring is sp3 hybridized, which accounts for
the fact that the ring is planar.
C. Benzene always behaves as a weak electrophile in the reactions it
undergoes.
D. Benzene reacts with bromine, in the presence of a Lewis acid like FeBr3,
in a substitution reaction.
E. Benzene demonstrates a high degree of unsaturation and it therefore
undergoes addition reactions.
catalysed dehydration of 2-methyl-butan-2-ol taking place at room temperature?
A. CH3CHC(CH3)CH3
B. (CH3)2CHCHCH2
C. CH3CH2CH2C(CH3)CH2
D. CH3CH2CO(CH3)2
E. CH3CH2C(CH3)CHO
Which one of the following is the product of the reaction of hept-3-ene and
chlorine?
A. 4,5-dichloroheptane
B. 3,3-dichloroheptane
C. 4,4-dichloroheptane
D. 3,4-dichloroheptane
E. dichloro-3,4-heptane
that of H2O- explain by giving resason.
