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Z/ HIGHER Chemistry > Chemical formula > Flashcards

Chemical formula Flashcards

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1
Q

What is the chemical formula for an alkane?

A

Cn H2n+2

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2
Q

What is the chemical formula for an alkene?

A

Cn H2n

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3
Q

What is the chemical formula for an alcohol?

A

C2 H5OH

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4
Q

What is the chemical formula for a carboxcylic acid?

A

Cn H2n+1COOH

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5
Q

What is the chemical formula for an aldehyde/alkanal?

A

C2 H4O

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6
Q

What is the chemical formula for a ketone?

A

Cn H2nO

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7
Q

What is the the Ester link?

A
  • C = O
    |
    O-
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8
Q

What is a hydroxyl group?

A

-O-H

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9
Q

What is the chemical formula for glycerol?

A

Propane -1,2,3-triol

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10
Q

What is a carboxyl group?

A

-COOH

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11
Q

What is an amino group?

A

-NH2

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12
Q

What is a carbonyl group?

A

-C=O

|

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13
Q

What is the chemical formula for Hydrochloric acid?

A

HCl

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14
Q

What is the chemical formula for sulphuric acid?

A

H2 SO4

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15
Q

What is the chemical formula of nitric acid?

A

HNO3

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16
Q

What is the equation for an acid?

A

Add hydrogen to balance the ion. NO3(-) + H Or CO3(2-) + 2H

17
Q

What are the 3 main oxidising agents to distinguish between aldehydes and ketones?

A
  • Acidified potassium dichromate - Cr2 O7(2-) (aq) ➡️ 2Cr(3+) (aq)
  • Fehling’s solution - 2Cu(2+) (aq) ➡️ Cu2 O (s)
  • Tollens’ reagent - Ag(+) (aq) ➡️ Ag(s)
18
Q

What is the equation for acidified potassium dichromate?

A

Cr2 O7(2-) (aq) ➡️ 2Cr(3+) (aq)

Other electrons in data book

19
Q

What is the equation for Fehling’s solution?

A

2Cu(2+) (aq) ➡️ Cu2 O (s)

Other electrons in data book

20
Q

What is the equation for Tollens’ reagent?

A

Ag(+) (aq) ➡️ Ag(s)

Other electrons in data book

21
Q

What is the colour change in Acidified potassium dichromate?

A

Orange to green

22
Q

What is the colour change for Fehling’s solution?

A

Blue to red/brown

23
Q

What is the colour change for Tollens’ reagent?

A

Colourless to silver

24
Q

What is the equation of a isoprene?

A

2-methyl buta-1,3-diene

25
Q

What are terpenes made of?

A

Many isoprene units

Z/ HIGHER Chemistry (25 decks)

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