Machine-translated by Google. Questions are authored in English.
Top

Discussion

A heat of solution must be included in an energy balance when

  • A.the solution is a very dilute one
  • B.the solute happens to be a gas
  • C.the temperature change is small
  • D.the heat of mixing is significant

Answer: D

Dissolving sulphuric acid in water releases enough heat to boil the mixture if it is done carelessly, so it cannot be ignored. Most organic mixtures release far less and the term is dropped safely. Adding acid to water rather than the reverse follows from it.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.