Types of formula

Last updated: 07/02/2020

AQA A-Level Chemistry Introduction to organic chemistry Types of formula

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Question 1 of 25

1. Question
What is the definition of the molecular formula?
- Shows the number and the type of atoms of each element within a molecule
- The simplest algebraic formula for any member of a homologous series
- The simplest whole-number ratio of the atoms of each element present in a compound
- Shows the relative positioning of all atoms in a molecule and the bonds between them
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Question 2 of 25

2. Question
What is the definition of the empirical formula?
- The simplest whole-number ratio of the atoms of each element present in a compound
- The simplest algebraic formula for any member of a homologous series
- Shows the number and the type of atoms of each element within a molecule
- Shows the relative positioning of all atoms in a molecule and the bonds between them
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Question 3 of 25

3. Question
What is the definition of the general formula?
- The simplest algebraic formula for any member of a homologous series
- Shows the relative positioning of all atoms in a molecule and the bonds between them
- Shows the number and the type of atoms of each element within a molecule
- The simplest whole-number ratio of the atoms of each element present in a compound
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Question 4 of 25

4. Question
What is the definition of the displayed formula?
- Shows the relative positioning of all atoms in a molecule and the bonds between them
- The simplest algebraic formula for any member of a homologous series
- Shows the number and the type of atoms of each element within a molecule
- The simplest whole-number ratio of the atoms of each element present in a compound
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Question 5 of 25

5. Question
What is the definition of the structural formula?
- Uses the smallest amount of detail possible to show the arrangement of atoms within a molecule
- Shows the number and type of atoms of each element within a molecule
- The simplest whole-number ratio of the atoms of each element present in a compound
- A simplified organic formula
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Question 6 of 25

6. Question
What is the definition of the skeletal formula?
- A simplified organic formula
- Shows the number and type of atoms of each element within a molecule
- The simplest whole-number ratio of the atoms of each element present in a compound
- Uses the smallest amount of detail possible to show the arrangement of atoms within a molecule
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Question 7 of 25

7. Question
What is the molecular formula of butanoic acid?
- $C_4H_8O_2$
- $C_2H_4O$
- $C_8H_{16}O_4$
- $C_3H_5O_2$
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Question 8 of 25

8. Question
What is the molecular formula of methyl 2-methylbutanoate?
- $C_6H_{12}O_2$
- $C_{14}H_{24}O_4$
- $C_7H_{14}O_2$
- $C_5H_{10}O_2$
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Question 9 of 25

9. Question
What is the molecular formula of pentan-3-one?
- $C_5H_{10}O$
- $C_5H_9O$
- $C_5H_5O$
- $C_{10}H_{20}O$
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Question 10 of 25

10. Question
What is the molecular formula of methyl propanoate?
- $C_4H_8O_2$
- $C_4H_4O$
- $C_8H_{16}O_4$
- $C_2H_8O$
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Question 11 of 25

11. Question
What is the empirical formula of butanoic acid?
- $C_2H_4O$
- $C_4H_8O_2$
- $C_8H_{16}O_4$
- $C_3H_5O_2$
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Question 12 of 25

12. Question
What is the empirical formula of pentan-3-one?
- $C_5H_{10}O$
- $C_5H_9O$
- $C_5H_5O$
- $C_{10}H_{20}O$
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Question 13 of 25

13. Question
What is the empirical formula of methyl propanoate?
- $C_2H_4O$
- $C_4H_4O$
- $C_8H_{16}O_4$
- $C_4H_8O_2$
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Question 14 of 25

14. Question
Draw the displayed formula for pentan-3-one.
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Question 15 of 25

15. Question
Draw the displayed formula for methyl propanoate.
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Question 16 of 25

16. Question
Draw the displayed formula for propanoic acid.
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Question 17 of 25

17. Question
Draw the displayed formula for pentane.
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Question 18 of 25

18. Question
Draw the structural formula for pentane.
- $CH_3(CH_2)_3CH_3$
- $CH_3(CH_2)_2CH_3$
- $CH_3CH_2CH_3$
- $CH_3(CH_2)_4CH_3$
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Question 19 of 25

19. Question
Draw the structural formula for pentan-3-one.
- $CH_3CH_2COCH_2CH_3$
- $CH_3CH_2CH_2CH_3$
- $CH_3CH_2COOHCH_2CH_3$
- $CH_3CH_2OCH_2CH_3$
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Question 20 of 25

20. Question
Draw the structural formula for propanoic acid.
- $CH_3CH_2COOH$
- $CH_3CH_2COH$
- $CH_3CH_2CH_2COOH$
- $CH_2COOH$
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Question 21 of 25

21. Question
Draw the structural formula for methyl propanoate.
- $CH_3CH_2COOCH_3$
- $CH_3COOCH_2CH_3$
- $CH_3CH_2COOHCH_3$
- $CH_3CH_2COCH_3$
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Question 22 of 25

22. Question
Draw the skeletal formula for methyl propanoate.
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Question 23 of 25

23. Question
Draw the skeletal formula for pentane.
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Question 24 of 25

24. Question
Draw the skeletal formula for pentan-2-one.
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Question 25 of 25

25. Question
Draw the skeletal formula for propanoic acid.
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