Core Organic Chemistry Random Retrieval

Choose one of the following options:

Which of the following statements describe molecules that are structural isomers?

(i) molecules whose atoms have the same arrangement in space

(ii) molecules that have the same molecular formula

(iii) molecules in which the atoms are joined to the same neighbouring atoms

(iv) molecules which the same atoms but they are bonded in a different order

Which of these organic compounds show a broad absorption peak caused by hydrogen bonding affecting a functional group.

(i) propanol

(ii) propanal

(iii) propanoic acid

(iv) propanone

The mass spectrum of copper has two significant peaks. The peak at 63 has a relative abundance of 69 and the peak at 65 has a relative abundance of 31.

This shows that the relative atomic mass of copper is:

Which is the correct sequence of events that takes place in a modern mass spectrometer in the production of a mass spectrum from a sample of an element or compound?

Which of these alcohols are isomers of butan-1-ol?

(i) CH₃CH₂CHOHCH₃

(ii) (CH₃)₃COH

(iii) CH₃CH(CH₃)CH₂OH

(iv) (CH₃)₃CCH₂OH

An alcohol consists of 64.9% carbon, 13.5% hydrogen and 21.6% oxygen.

What is the molecular formula of the compound? (Relative atomic masses: C = 12, H = 1, O = 16)

Why is ethanol a liquid while propane is a gas? (Relative atomic masses: C = 12, H = 1, O = 16)

The reagent which converts hex-1-ene to dibromohexane is:

Passing the vapour of a liquid mixture of alkanes over strongly heated porcelain chips produces a product which:

(i) is a gas

(ii) is highly flammable

(iii) decolourises a solution of bromine

(iv) is soluble in water.