Class 12 Chemistry 2016 Board Exam

Write the structure of an isomer of compound C₄H₉Br which is most reactive towards SN₁ reaction.

Write the IUPAC name of the given compound :
[Structure: C₆H₅-CH₂-CH₂-OH]

(i) Gas (A) is more soluble in water than Gas (B) at the same temperature. Which one of the two gases will have the higher value of KH (Henry's constant) and why ?
(ii) In non-ideal solution, what type of deviation shows the formation of maximum boiling azeotropes ?

When a coordination compound CoCl₃.6NH₃ is mixed with AgNO₃, 3 moles of AgCl are precipitated per mole of the compound. Write
(i) Structural formula of the complex
(ii) IUPAC name of the complex

For a reaction : H₂ + Cl₂ $\stackrel{h\nu }{\to }$ 2HCl
Rate = k
(i) Write the order and molecularity of this reaction.
(ii) Write the unit of k.

Write the chemical equations involved in the following reactions :
(i) Hoffmann-bromamide degradation reaction
(ii) Carbylamine reaction

For the first order thermal decomposition reaction, the following data were obtained :
C₂H₅Cl(g) → C₂H₄(g) + HCl(g)

Time / sec	Total pressure / atm
0	0.30
300	0.50

Calculate the rate constant.
(Given : log 2 = 0.301, log 3 = 0.4771, log 4 = 0.6021)

Calculate the boiling point of solution when 4 g of MgSO₄ (M = 120 g mol⁻¹) was dissolved in 100 g of water, assuming MgSO₄ undergoes complete ionization.
(Kb for water = 0.52 K kg mol⁻¹)

Write the final product(s) in each of the following reactions :
(a) CH₃–C(CH₃)(CH₃)–O–CH₃ + HI →
(b) CH₃–CH₂–CH(OH)–CH₃ $\stackrel{\text{Cu/573 K}}{\to }$
(c) C₆H₅–OH $\underset{\text{(ii) H⁺}}{\overset{\text{(i) CHCl₃ + aq. NaOH}}{\to }}$

Give reasons for the following :
(i) Aniline does not undergo Friedal-Crafts reaction.
(ii) (CH₃)₂NH is more basic than (CH₃)₃N in an aqueous solution.
(iii) Primary amines have higher boiling point than tertiary amines.