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Sagot :
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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