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Author Question: Determine the freezing point of a solution that contains 78.8 g of naphthalene (C10H8, molar mass = ... (Read 101 times)

wenmo

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on: Nov 18, 2019

Question 1

Determine the freezing point depression of a solution that contains 30.7 g glycerin (C3H8O3, molar mass = 92.09 g mol-1) in 376 mL of water. Some possibly useful constants for water are Kf = 1.86 °C m-1 and Kb = 0.512 °C m-1.
◦ 0.654 °C
◦ 3.33 °C
◦ 0.887 °C
◦ 1.65 °C
◦ 2.54 °C

Question 2

Determine the freezing point of a solution that contains 78.8 g of naphthalene (C10H8, molar mass = 128.16 g mol-1) dissolved in 722 mL of benzene (d = 0.877 g mL-1). Pure benzene has a melting point of 5.50 °C and a freezing point depression constant of 4.90 °C m-1.
◦ 4.17 °C
◦ 1.68 °C
◦ 1.33 °C
◦ 4.76 °C
◦ 0.74 °C
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Marked as best answer by wenmo on Nov 18, 2019

katieost

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Reply #1 on: Nov 18, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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wenmo

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Reply 2 on: Nov 18, 2019
Great answer, keep it coming :)

gcook

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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