Q. Write the equations for the following lab, preparations:
a) Ethane from sodium propionate
b) Ethane from iodoethane
c) Ethyne from calcium carbide
d) Methanol from iodomethane.

[4 MARKS]

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Q.

A scientist noted the solubility of methane gas in water at 25⁰ C at various pressures. But he entered the wrong pressure values corresponding to the solubility values.

$\begin{matrix} S o l u b i l i t y o f o x y g e n g a s i n w a t e r (m g / L) & P r e s s u r e e x e r t e d o n o x y g e n g a s (i n P a s c a l) 3 & 0.015 5 & 0.006 9 & 0.003 \end{matrix}$

Based on your knowledge about variation of solubility with pressure, help him correct the observation table.

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Q.

Which of the following is TRUE for alkenes?

Alkenes have pi bonds (not all bonds)
Alkenes are more reactive than alkanes
Alkenes, especially the higher ones with 3 or more carbons can possibly exhibit geometrical isomerism
Alkenes are soluble in organic solvents

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Q.

Which of the following is TRUE for alkenes?

Alkenes have pi bonds (not all bonds)
Alkenes are more reactive than alkanes
Alkenes, especially the higher ones with 3 or more carbons can possibly exhibit geometrical isomerism
Alkenes are soluble in organic solvents

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Q. Which one of the following reactions is consistent with the Markovnikov's rule?

$(C H_{3})_{2} C H - C H = C H_{2} + H_{2} O \to (C H_{3})_{2} C H - C H_{2} - C H_{2} - O H$
$C H_{3} - C H_{2} - C H = C H_{2} + H_{2} O \to C H_{3} - C H_{2} - C H_{2} - C H_{2} - O H$
$C H_{3} C H = C H C H_{3} + H_{2} O \to C H_{3} C H_{2} - C H (C H_{3}) - O H$
$H_{2} C = C H C H_{3} + H_{2} O \to H_{3} C - C H (O H) - C H_{3}$