MCQ
The IUPAC name of the compound CH≡C−CH2−CH2−CH=CH2 is:
- AHex-1-en-5-yne
- BHexyn-5-ene
- CHex-5-en-2-yne
- DHex-5-en-1-yne
Explanation:
CH≡C−CH2−CH2−CH=CH2
IUPAC name: Hex-1-en-5-yne.
Numbering starts from the double bond bearing carbon, as alkenes are higher priority functional groups than alkynes (triple bond).
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$\frac{1}{2}{P_4}(s) + 3C{l_2}(g) \to 2PC{l_3}(l)\,;$ $\Delta H=-635 \,kJ$
$PC{l_3}(l) + C{l_2}(g) \to PC{l_5}(s)\,;$ $\Delta H=-137\, kJ$
The value of heat of formation of $PCl_5$ is ......$kJ\,mol^{-1}$
$Z$ is known as