1 answer

Please help!!! Temperature (°C) Time A studented sample of NH, NO.() to water and measured the...

Question:

Temperature (°C) Time A studented sample of NH, NO.() to water and measured the temperature over time. The data are shown in
(6) According to the graph is the dissolution of NH NO3(s) endothermic or exothermic? Explain 0/10000 Word Limit c) Are the s
please help!!!
Temperature (°C) Time A studented sample of NH, NO.() to water and measured the temperature over time. The data are shown in the graph above What is the of the student should use to caldate
(6) According to the graph is the dissolution of NH NO3(s) endothermic or exothermic? Explain 0/10000 Word Limit c) Are the strengths of the interactons between the particles in the solute and between the particles in the solvent before the solute and solvent are combined greater than less than or equal to the strengths of the interactions between solute particles and solvent particles wer dissolution Explain B TV is

Answers

a)

The temperature decreases from 24.8^{0}C to 22.2^{0}C .

So to calculate enthlpy of dissolution process the temperature difference used to be

= 24.8^{0}C - 22.2^{0}C

= 2.6^{0}C

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b)

According to graph temperature of system decreases over the time . So dissolution of ammonium nitrate in water is Endothermic process.

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c)

In an endothermic process the solute-solvent interactions ( after dissolution) is less than the solute-solute and solvent-solvent interactions ( before dissoluition)

Solute is Ammonium nitrate

Sovent is water

Energy is requred to break the bonds between solute-solute interactions and water -water particles interactions in this process. Due to this energy is absorbed and temperature of solute+ solvent system decreases.

.

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