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You are required to standardize a dilute solution of sulphuric acid, and undertake the following steps: (i) 4.805 g of solid sodium tetraborate (Na2B4O7) are added to a 250 mL volumetric flask, and the solution made up to the mark with distilled water. (ii) 25.00 mL aliquots of the stock solution from (i) are transferred to conical flasks, for titration against the sulphuric acid solution in the burette. (iii) You perform titrations using two different indicators: bromocresol green, and phenolphthalein. With bromocresol green, the average titre volume is 22.50 cm3 , while with phenolphthalein, the average volume is 9.50 cm3 . (a) Write the balanced equation for the reaction between Na2B4O7 and sulphuric acid

You are required to standardize a dilute solution of sulphuric acid, and undertake the following steps: (i) 4.805 g of solid sodium tetraborate (Na2B4O7) are added to a 250 mL volumetric flask, and the solution made up to the mark with distilled water. (ii) 25.00 mL aliquots of the stock solution from (i) are transferred to conical flasks, for titration against the sulphuric acid solution in the burette. (iii) You perform titrations using two different indicators: bromocresol green, and phenolphthalein. With bromocresol green, the average titre volume is 22.50 cm3 , while with phenolphthalein, the average volume is 9.50 cm3 . (a) Write the balanced equation for the reaction between Na2B4O7 and sulphuric acid

Chemistry
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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You are required to standardize a dilute solution of sulphuric acid, and undertake the following steps:
(i) 4.805 g of solid sodium tetraborate (Na2B4O7) are added to a 250 mL volumetric flask, and the
solution made up to the mark with distilled water.
(ii) 25.00 mL aliquots of the stock solution from (i) are transferred to conical flasks, for titration against
the sulphuric acid solution in the burette.
(iii) You perform titrations using two different indicators: bromocresol green, and phenolphthalein.
With bromocresol green, the average titre volume is 22.50 cm3
, while with phenolphthalein, the average
volume is 9.50 cm3
.
(a) Write the balanced equation for the reaction between Na2B4O7 and sulphuric acid

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