A NAOH solution with an approximate concentration of 0.1 mol / L was produced in the laboratory. In order to obtain the exact concentration of this solution, its standardization was carried out, using a standard solution of oxalic acid (0.05 mol / L) and phenolpholine as an acid base indicator. The data obtained with the standardization were: H;C_0, + NaOH - Na* + C,0;- + H,0 Va = 10.00 mL, volume of NaOH solution added to the flask; Pv = 11.77 mL, spent volume of standard solution; Pv = 0.05, concentration of the standard solution; The unbalanced reaction of the system is shown below: From the data that was presented, answer: a) What is the real value of the concentration of NaOH (Ca). Present all the calculations and explanations necessary to arrive at the Ca value. b) Explain in a succinct way all the steps, experimental apparatus and necessary care to carry out a standardization experiment in the laboratory, based on the data presented in the statement

A NAOH solution with an approximate concentration of 0.1 mol / L was produced in the laboratory. In order to obtain the exact concentration of this solution, its standardization was carried out, using a standard solution of oxalic acid (0.05 mol / L) and phenolpholine as an acid base indicator. The data obtained with the standardization were: H;C_0, + NaOH - Na* + C,0;- + H,0 Va = 10.00 mL, volume of NaOH solution added to the flask; Pv = 11.77 mL, spent volume of standard solution; Pv = 0.05, concentration of the standard solution; The unbalanced reaction of the system is shown below: From the data that was presented, answer: a) What is the real value of the concentration of NaOH (Ca). Present all the calculations and explanations necessary to arrive at the Ca value. b) Explain in a succinct way all the steps, experimental apparatus and necessary care to carry out a standardization experiment in the laboratory, based on the data presented in the statement

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter14: Principles Of Neutralization Titrations

Section: Chapter Questions

Problem 14.9QAP

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