Part One: Preparation of a Sodium Hydroxide Solution As sodium hyd the mass of 5

Question

Part One: Preparation of a Sodium Hydroxide Solution As sodium hyd the mass of 5 pellets on a milligram balance (use weighing paper to protect the balance) and transfer these to a clean, 250 mL volumetric flask. Carefully fill the flask with deion to the calibration mark, stopper the flask, is homogeneous. roxide is typically manufactured and supplied in pellet form accurately determine ized water and mix thoroughly in order to assure that the solution 1-3o Mass of NaOH: .763 Volume of Solution: 250.0 ml 6.2S L Show your calculation for the molarity (M) of the solution here below. Molarity of NaOH Solution:

Explanation / Answer

since mass of NaOH is 0.783 gram

molar mass of NaOH = 39.997 g/mol

therefore, moles of NaOH in 0.783 gram = (0.783g/39.997 g/mol)= 0.019576 mol

volume = 250ml = 0.25 L

molarity = (number of moles of NaOH/ volume of solution) = (0.019576/0.25) mol/L =0.0783 mol/L

Hence the molarity of the solution is 0.0783 M

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