Answered

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In a laboratory, a student combines vinegar and baking soda into a beaker. The initial temperature is 28 degrees Celsius and the final temperature reading two minutes later is 20 degrees Celsius.

What happened to the heat in the surroundings?
Did an endothermic or exothermic reaction occur?

Sagot :

mickymike92

The surroundings loses heat to the reaction mixture, therefore, the reaction is endothermic.

Data provided:

  • Initial temperature of the reaction mixture = 28 degrees Celsius
  • Final temperature of the reaction mixture = 20 degrees Celsius

Temperature difference = Final temperature - Initial temperature

Temperature difference = 20 °C - 28°C

Temperature difference = - 8°C

Therefore there is loss of heat. The surroundings loses heat to the reaction mixture.

Definitions: of terms

An exothermic reaction is a reaction in which heat is released into the surroundings. The reaction vessels feels hotter.

An endothermic reaction is a reaction in which heat is absorbed from the surroundings. The reaction vessels feels colder.

Conclusion:

Since heat is absorbed from the surroundings in the reaction between baking soda and vinegar, the reaction is endothermic.

Learn more about exothermic and endothermic reactions at: https://brainly.com/question/6506846

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