Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

Anonymous asked in Science & MathematicsChemistry · 1 month ago

Chemistry grade 12 help?

Using the data below, what is the order of changes that occur when ethanol is heated from -25.0ºC to 85.0ºC?

Boiling point of ethanol: 78.5ºCMelting point of ethanol: -117.3ºCa. Phase change, temperature changeb. Phase change, temperature change, phase changec. Temperature change, phase changed. Temperature change, phase change, temperature change

1 Answer

  • 1 month ago
    Favorite Answer

    At -25 C,  ethanol is a liquid. So, as you heat it, it will remain a liquid, but its temperature will increase up to 78.5ºC. At this point, it will undergo a phase change to a gas at 78.5ºC. As you continue heating it, the gas will increase in temperature to the final temperature.  So, the correct answer is:

    d. Temperature change, phase change, temperature change

Still have questions? Get your answers by asking now.