Which Pairs of Substances Are Isomers?

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Discussion Overview

The discussion revolves around identifying which pairs of substances are isomers, with a focus on specific examples provided by participants. The scope includes definitions and classifications related to isomerism and related concepts in chemistry.

Discussion Character

  • Homework-related
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Participants discuss the pairs of substances to determine if they are isomers, with specific focus on butane and methylpropane as potential isomers.
  • One participant suggests that the answer is option C, indicating that they believe butane and methylpropane share the same formula but differ in arrangement.
  • There is a discussion about the definitions of terms, with participants questioning what constitutes isomers and exploring related concepts such as isotopes and allotropes.
  • Participants identify that 35Cl and 37Cl are isotopes, while diamond and graphite are referred to as allotropes.

Areas of Agreement / Disagreement

Participants express differing views on which pairs are isomers, particularly regarding the classification of the examples provided. The discussion remains unresolved as no consensus is reached on the correct identification of isomers.

Contextual Notes

There are limitations in the definitions and classifications discussed, particularly regarding the terms isomers, isotopes, and allotropes, which may depend on specific contexts and interpretations.

mimi88
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Homework Statement


Which of the following pairs of substances are isomers?

Homework Equations



a. 35Cl and 37Cl
b. Hexane and benzene
c. Butane and methylpropane
d. Diamond and graphite

The Attempt at a Solution


Which one is right ?
 
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What are your thoughts?

Start with the definition.
 
I think it is C?? They look like sharing a different arrangement but same formula ??
 
OK

Extra question: and how would you call forms listed in point A? D?
 
Ah...A is constitutional isomers?? And D is three-dimensional lattice??
 
Nope, take a step back and forget about isomers.

What do you call two different atoms with same number of protons but different numbers of neutrons?

When an element can exist is different forms, how do you call them?
 
I this they are isotopes . Do you mean Allot-ropes for that element?
 
Yes.
 
Thank you so much ;)
 

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