Can the change in temperature be negative?

NetherCraft 0

For Q=mcΔT my temperature change is negative (it went from 189.5 to 45.2)(and the change in temp is the final temp-initial temp) but this doesn’t make sense because then the Q would be negative.

1 Answer

  • Sure. If your temperature went down then you delta t would be negative (t final – t initial).

    Q is heat energy in a system, and a system can lose heat. Q can be negative, meaning that your system has indeed lost heat. Since heat is lost, this indicates an exothermic reaction.

    hope this helped. good luck!

    Source(s): chem major

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