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Name it correctly (Posted on 2012-08-16) Difficulty: 2 of 5
A disclaimer: This problem does not assume any knowledge of chemistry:


The formulae for chemical molecules and their names are given below in mixed order:
C3H8, C4H6, C3H4, C4H8, C7H14, C2H2;
Heptene, Butyne, Propane, Butene, Ethyne, Propyne.

1.Match the formulae with the names.
Explain your solution.

2.Write the names corresponding to the following formulae: C2H4, C2H6, C7H12.

3.Write the formulae for the following molecules: Propene, Butane.

Source: Russian contest

No Solution Yet Submitted by Ady TZIDON    
Rating: 5.0000 (2 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution a solution | Comment 6 of 8 |
Where nC is number of atoms of Carbon and  nH is the number of atoms of Hydrogen

'Eth-' : nC = 2
'Prop-': nC = 3
'But-' : nC = 4
'Hept-': nC = 7

'-yne' : nH = 2*(nC - 1)
'-ene' : nH = 2*(nC)
'-ane' : nH = 2*(nC + 1)


1.
C2H2 = Ethene
C3H4 = Propyne
C3H8 = Propane
C4H6 = Butyne
C4H8 = Butene
C7H14 = Heptene

2.
C2H4 = Ethene
C2H6 = Ethane
C7H12 = Heptyne

3.
Propene = C3H6
Butane = C4H10

  Posted by Dej Mar on 2012-08-17 00:04:09
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