Preparing a 1M NaCl Solution of 200mL with 5g Sucrose: A Comprehensive Guide

In this guide, we will walk you through a detailed process of preparing a 1 M solution of sodium chloride (NaCl) of 200 mL volume, which also includes 5 grams of sucrose.

Materials Needed

Sodium chloride (NaCl) Sucrose Distilled water 200 mL volumetric flask or a suitable container Analytical balance Stirring rod or magnetic stirrer

Step-by-Step Procedure

Step 1: Calculate the Amount of NaCl

The molar mass of NaCl is approximately 58.44 g/mol. To create a 1 M solution in 200 mL (0.2 L), follow these calculations:

Initial mass: Mass Molarity × Volume × Molar Mass Mass of NaCl 1 mol/L × 0.2 L × 58.44 g/mol 11.688 g

Step 2: Calculate the Amount of Sucrose

To attain a 5 g/100 mL solution, you need to determine the amount of sucrose. For a 200 mL solution:

Mass of sucrose (5 g/100 mL) × 200 mL 10 g

Step 3: Preparation

Dissolve NaCl Remove and weigh approximately 11.688 g of NaCl. Add it to a beaker. Dissolve Sucrose Remove and weigh 10 g of sucrose. Add it to the same beaker. Add Water Add distilled water to the beaker and stir until both NaCl and sucrose are completely dissolved. Transfer to Volumetric Flask Transfer the solution to a 200 mL volumetric flask. Rinse the beaker with distilled water and add the rinse to the flask to ensure all solutes are transferred. Adjust Volume Add distilled water to the flask until the total volume reaches 200 mL. Ensure thorough mixing.

Final Notes

Ensure that the solution is well-mixed to achieve uniform concentration. Label the solution with its contents and concentration for future reference.

This method will yield a 1 M NaCl solution with a 5 g sucrose concentration in a total volume of 200 mL.

Alternatively, if you assume a 5 g/100 mL sucrose solution results in 5 g in 100 mL, then you would need 0.1 mol of NaCl, which is 5.8 g, and 5 g of sucrose. Use a 100 mL graduated flask, fill it with about 75 mL of deionized water, then add the sucrose and sodium chloride. Stir until everything is dissolved. Slowly add water to reach the mark, ensuring all residues from the neck of the flask are washed down.