While performing a thermodynamics experiment, a student made the … - Vidyadip

MCQ

While performing a thermodynamics experiment, a student made the following observations, $HCl + NaOH \rightarrow NaCl + H _{2} O \Delta H =-57.3\, kJ\,mol ^{-1}$

$CH _{3} COOH + NaOH \rightarrow CH _{3} COONa + H _{2} O$ $(\Delta H =-55.3\,kJ\,mol ^{-1})$ The enthalpy of ionization of $CH _{3} COOH$ as calculated by the student is $kJ mol ^{-1}$. (nearest integer)

A
$5$
B
$2$
✓
$4$
D
$3$

✓

Answer

Correct option: C.

$4$

c
$\Delta H _{\text {ionisation }}$ of $CH _{3} COOH =|-57.3-(-55.3)|$

$=2\,KJ / mol$

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{C{H_3} - CH - CH = C{H_2} + HBr \to X\,\left( {major\,product} \right)} \\
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