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In the video, 1 gram of ammonium chloride is added to 5 mL of water. The following reaction takes place.

NH4
Cl + H2
O → NH4
OH + HCl

starting temperature ending temperature
20o
C 14o
C
Fill in the blanks to complete the following description.

(6 points)
In this reaction, the temperature changed from
to
. This means the temperature
. This type of reaction is categorized as
. This type of reaction causes the surrounding to feel
, which is why it is a good reaction to use when designing a

In this reaction, the temperature changed from 20°C to 14°C. This means the temperature decreased. This type of reaction is categorized as an endothermic reaction. This type of reaction causes the surroundings to feel cold, which is why it is a good reaction to use when designing a refrigeration system.

In this reaction, the temperature changed from 20oC to 14oC. This means the temperature decreased. This type of reaction is categorized as an endothermic reaction. This type of reaction causes the surrounding to feel cold, which is why it is a good reaction to use when designing a cooling system, such as a refrigeration unit.