Organic Chemistry Answers

an organic compound exhibits λmax = 265nm in water whereas 279 m in hexane. what should be the nature of transition

Three different alkenes react with hydrogen in the presence of platinum or

nickel catalyst to yield 2-Methylbutane. Identify the reactions involved for the

three alkenes.

Arrange the following in order of increasing stength :

1) Trichloromethanoic acid 2) Ethanoic acid 3) Dichloroethanoic acid 4) Chloroethanoic acid

A. 2,4,3,1

B. 1,2,3,4

C. 1,3,4,2,

D.4,3,2,1

E.4,3,1,2

What is the number of atoms of hydrogen in n moles of methane where n is the total order of the reaction. S₂O₈^2-_(aq) + 3I^-_(aq) → SO₄^2-_(aq) + I₃^-_(aq).such that this step is called the rate-determining step of the reaction (N_A represents the Avogadro constant).

A. 1/4(N_A) B. 1/3(N_A) C. (N_A) D. 1/2(N_A/4) E. N_A/16

The number of moles of a sodium salt (A) is defined as m = ∫₀¹ [1/1+x² ]dx. Given that the sodium salt (A) reacts with concentrated sulphuric acid in the ratio 2:1 to produce a product B according to the equation

A + H₂SO₄ → B. Find the mass of the compound B that was produced (RMM of B= 20g/mol)

A. (π/4)g B. (20.5 +π/4)g

C. (5/3)m² D. (5/2)π

Select the strongest acid and explain why?

A. HCl B. HF C. HI D. HBr

X=CH₃-CH₂-CH₂-CH₂-CH₃ Y=CH₃-CH₂-CH₂-CH₂-OH Z= HO-CH₂-CH₂-CH₂-OH

Based on concepts of polarity and hydrogen bonding, which of the following sequences correctly lists the compounds above in the order of their increasing solubility in water?

A. Z<Y<X B. X<Y<Z

Which of the substances has free electrons in its bonding model?

A. Carbon(diamond)

B. Carbon(graphite)

C. Carbon dioxide

D. Fluorine