Help please. How would the concentration of the vinegar solution be altered if the volumetricflask used to dilute the original concentration of vinegar contained some water?The concentration would be lowered since the final volume would be higherthan the expected one.The concentration would not be changed as more distilled water will be needed.The concentration would be higher since the final volume would be higher thanthe expected one. If a sample of vinegar was found to 1.55 % (m/m) acetic acid, what is theconcentration of the acetic acid in molarity?0.931 M0.0259 M1.07 M0.259 M

Formula used: Concentration (molarity) = number of moles of solute ÷ volume of solution in L Means concentration depends inversely on the volume or vice versa. 1) as there was already some amount of water in the flask. So the final volume of diluted solution will be higher than the expected one. And as we know volume and concentration are inversely proportional to each other. Concentration (molarity) = number of moles of solute/volume of solution in L So if the volume is higher than the expected one, concentration will be lower than the expected one. Hence answer is : The concentration would be lowered since the final volume would be higher than the expected one. 2) m/m % of acetic acid in solution= 1.55 % Means 100 g of vinegar contains 1.55 g of acetic acid Let mass of vinegar be 100g , then mass of solute ( acetic acid) = 1.55 g Molar mass of Acetic acid= 60.05 g/mol Number of moles of acetic acid= (1.55 g) ÷ (60.05 g/mol ) = 0.0258 moles Density of vinegar is approx= 1.005 g/ml Volume of vinegar will be= mass /density= (100g)÷(1.005g/ml) = 99.5ml = 0.0995 L Because 1L = 1000 ml Concentration of solution in molarity = number of moles of solute/volume of solution in L = (0.0258 moles)/(0.0995L) = 0.2592 M Hence answer is : 0.259 M

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If a sample of vinegar was found to 1.55 % (m/m) acetic acid, what is the concentration of the acetic acid in molarity? 0.931 M 0.0259 M 1.07 M 0.259 M

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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