4.1.2 alkanes Flashcards

1
Q

general formula

cycloalkanes

A

Cn H2n+2

Cn H2n

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2
Q

sigma bond

A

joined to four other atoms by single covalent bond

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3
Q
  • have a 3D specific tetrahedonal shape bc….

- angkle of each bond approx

A
  • repel each other equally

- 109.5

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4
Q

as chain length increases, boiling point…

A

increases

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5
Q

increased chain length —>

A
  • greater surface area of contact

- stronger london forces

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6
Q

branched isomers hv

more branching —>

A

lower boiling points

  • less surface area of contact
  • weaker london forces
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7
Q

REASONS FOR LACK OF REACTIVITY:
. C-_ AND C-_ SIGMA BONDS ARE
. C-_ BONDS ARE POLAR
. THE __________ OF C AND H IS SO ______ THAT THE - BOND CAN ALSO BE CONSIDERED ______

A

. C,H
. C
. ELCTRONEGATIVITY, SIMILAR, C,H, NON POLAR

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