gas liquid and gas solid and liquid liquid solid Heat added () 24) The phase cha
ID: 1026693 • Letter: G
Question
gas liquid and gas solid and liquid liquid solid Heat added () 24) The phase changes B C and D +E are not associated with temperature increases because the energy is used up to A) increase distances between moleculesC) Increase in velocity of molecules B) break intramolecular bonds D) Increase the density of molecules E) Rearrange atoms within molecules C) increase the Density of molecules 34.6 783°C / 100°C 800 760 Normal boiling 600Diethyl ether Ethyl alcohol (ethanol) Water 200 Ethylene glycol 20 40 60 80 100 Temperature (°C) 25) Based on the figure above, the boiling point of diethyl ether under an external pressure of 1.32 atm 25) IS A) 20 B) 10 C) 30 D) 0 E) 40 26) Which one of the following exhibits dipole-dipole attraction between molecules? 26) A) XeF4 B) BCl3 C AsH3 D) Cl2 E) CO2Explanation / Answer
Ans 24 : A) Increase distances between molecules
The phase changes from B->C and D -> E does not show any temperature changes , because the energy is utilised to increase the distance between the molecules of the substance that causes the physical phase change.
The liquids have larger distances in between their molecules as compared to solids , but less than that of gases.
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