### Preparation of Sodium Thiosulfate SolutionA chemist prepares a solution of sodium thiosulfate (\( \text{Na}_2\text{S}_2\text{O}_3 \)) by measuring out 121 g of sodium thiosulfate and dissolving it in a 200 mL volumetric flask. The flask is then filled to the mark with water to ensure the correct volume of the solution.### ProblemCalculate the concentration of sodium thiosulfate in the solution in moles per liter (mol/L). Provide your answer rounded to 3 significant digits.#### Solution Steps:1. **Determine the Molar Mass of Sodium Thiosulfate:** \[ \text{Molar mass of } \text{Na}_2\text{S}_2\text{O}_3 = 2(22.99 \text{ g/mol}) + 2(32.07 \text{ g/mol}) + 3(16.00 \text{ g/mol}) \] \[ = 2(22.99) + 2(32.07) + 3(16.00) \] \[ = 45.98 + 64.14 + 48.00 \] \[ \approx 158.12 \text{ g/mol} \]2. **Convert Mass to Moles:** \[ \text{Moles of } \text{Na}_2\text{S}_2\text{O}_3 = \frac{\text{Mass}}{\text{Molar mass}} = \frac{121 \text{ g}}{158.12 \text{ g/mol}} \] \[ \approx 0.765 \text{ moles} \]3. **Convert Volume to Liters:** \[ \text{Volume} = 200 \text{ mL} = 0.200 \text{ L} \]4. **Calculate the Concentration:** \[ \text{Concentration} = \frac{\text{Moles}}{\text{Volume}} = \frac{0.765 \text{ moles}}{0.200 \text{ L}} \] \[ \approx 3.825 \text{ mol/L}

Given : Mass of Na2S2O3 = 121 g And volume of solution = 200 mL = 0.200 L…

A chemist prepares a solution of sodium thiosulfate (Na, S,O,) by measuring out 121. g of sodium thiosulfate into a 200. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's sodium thiosulfate solution. Round your answer to 3 significant digits.

A chemist prepares a solution of sodium thiosulfate (Na, S,O,) by measuring out 121. g of sodium thiosulfate into a 200. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's sodium thiosulfate solution. Round your answer to 3 significant digits.

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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