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Date May 2015 Marks available 1 Reference code 15M.1.hl.TZ1.17
Level HL Paper 1 Time zone TZ1
Command term Question number 17 Adapted from N/A

Question

Which species are arranged in order of increasing entropy?

A.     \({{\text{C}}_{\text{3}}}{{\text{H}}_{\text{8}}}{\text{(g)  <  C}}{{\text{H}}_{\text{3}}}{\text{OH(l)  <  Hg(l)  <  Na(s)}}\)

B.     \({\text{C}}{{\text{H}}_{\text{3}}}{\text{OH(l)  <  }}{{\text{C}}_{\text{3}}}{{\text{H}}_{\text{8}}}{\text{(g)  <  Hg(l)  <  Na(s)}}\)

C.     \({\text{Na(s)  <  Hg(l)  <  C}}{{\text{H}}_{\text{3}}}{\text{OH(l)  <  }}{{\text{C}}_{\text{3}}}{{\text{H}}_{\text{8}}}{\text{(g)}}\)

D.     \({\text{Na(s)  <  Hg(l)  <  }}{{\text{C}}_{\text{3}}}{{\text{H}}_{\text{8}}}{\text{(g)  <  C}}{{\text{H}}_{\text{3}}}{\text{OH(l)}}\)

Markscheme

C

Examiners report

[N/A]

Syllabus sections

Additional higher level (AHL) » Topic 15: Energetics/thermochemistry » 15.2 Entropy and spontaneity
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