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Brilliant_brown [7]
3 years ago
6

Which of the followings is true about the melting temperature of potassium chloride ?

Chemistry
2 answers:
zmey [24]3 years ago
8 0

Answer:

The melting temperature is relatively high.

Explanation:

nikitadnepr [17]3 years ago
3 0
The melting pot is fairly high
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KNO3(s) --&gt; K+(aq) + NO3-(aq)This reaction was carried out in a Styrofoam insulated calorimeter and the following data were r
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Answer:

Equation correctly showing the heat of solution

KNO_3(s)+35.2 kJ \rightarrow K^+(aq) + NO_{3}^-(aq)

Explanation:

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Change in temperature = \Delta T=T_f-T_i

ΔT = 21.6ºC - 30.0ºC = -8.4ºC

Heat lost by the solution = Q

Q = mc\Delta T

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Q = -3,511.2 J ≈ -3.51 kJ

Heat absorbed by potassium nitrate when solution in formed; Q'

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