Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to a…
Question
Using both images attached please do all the calculations in the image attached
Calculations 1 2 3 3 4 5 6 7 8 9 10 11 12 13 14 15 16 mass solvent (H₂O) = molsolute = mass Msolution Find the molality of the solution (from Part C): mass solute (NaCl) = molar mass solute (NaCl): molar mass 2 3 4 5 = molsolute kgsolvent 6 7 8 9 10 11 12 13 14 15 AT IK Msolution = -9.6°C -10°C Calculate van't Hoff factor (i): -11°C - 11.5°C g g kg Calculate the change in temperature (FP Depression): AT= FP solvent-FP solution g/mol FP solvent from Data Table B FP = from Data Table C solution K₁ = 1.80°Ckg/mol AT = from step 2 msolution = from step 1
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Transcribed Image Text:Calculations 1 2 3 3 4 5 6 7 8 9 10 11 12 13 14 15 16 mass solvent (H₂O) = molsolute = mass Msolution Find the molality of the solution (from Part C): mass solute (NaCl) = molar mass solute (NaCl): molar mass 2 3 4 5 = molsolute kgsolvent 6 7 8 9 10 11 12 13 14 15 AT IK Msolution = -9.6°C -10°C Calculate van't Hoff factor (i): -11°C - 11.5°C g g kg Calculate the change in temperature (FP Depression): AT= FP solvent-FP solution g/mol FP solvent from Data Table B FP = from Data Table C solution K₁ = 1.80°Ckg/mol AT = from step 2 msolution = from step 1
Exp3: Calculation of van't Hoff factor(i) using Freezing Point Depression Data Table A (The temperature should reach atleast -10°C) Time (min) 0 5 10 15 20 # 1 2 3 4 5 Data Table B (Continue recording data till the temperature is constant for atleast 2 minutes at 0°C) FP solvent (It should be 0°C) FP. mass of dl water # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 = Time (min) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 Data Table C (Continue recording data till the temperature is constant ~ -14°C) (It should be 14°C) solution Temperature (°C) -5°C -10°C 10g U Temperature (°C) 3°C 1°C 0°℃ mass of water mass of crystalline NaCl 1.002g # Time (min) 0 1 Temperature (°C) 5°℃ 3°C
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Transcribed Image Text:Exp3: Calculation of van't Hoff factor(i) using Freezing Point Depression Data Table A (The temperature should reach atleast -10°C) Time (min) 0 5 10 15 20 # 1 2 3 4 5 Data Table B (Continue recording data till the temperature is constant for atleast 2 minutes at 0°C) FP solvent (It should be 0°C) FP. mass of dl water # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 = Time (min) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 Data Table C (Continue recording data till the temperature is constant ~ -14°C) (It should be 14°C) solution Temperature (°C) -5°C -10°C 10g U Temperature (°C) 3°C 1°C 0°℃ mass of water mass of crystalline NaCl 1.002g # Time (min) 0 1 Temperature (°C) 5°℃ 3°C
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Step 1: Freezing point depression
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Step 2: Calculation of molality (m)
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Step 3: Calculation of FP depression
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Step 4: Calculation of van't Hoff factor (i)
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Solution
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