ask 11.12 thanks 2每張試題春務必填寫(學號)、 (姓名)。The etnyl acetate concentration in an alcoholic solution was determined by diluting a 10.00 ml. sample to 100.00 ml. A20.00 ml portion of the dilution was was refluxed with 40.00 mL of 0,04672 M KOH:CHCOOCHs+OH CHCOO+CH,OHAfter cooling, the excess OH was back-titrated with 3.41 ml of 0.05042 M H,SO.Calculate the number of grams of ethylacetate (FM 88.11 g/mol) per 100 ml. of the original sample11. The amount of Na:S:Os consumed in the back-titration is (a) 0.3439 mmole (b) 0.2625 mmole (c) 0.1874 mmole (d)0.0928 mmole12. The number of grams of ethyl acetate is (a) 0.4305 g (b) 0.5655 g (c) 0.6718 g (d) 0.7288 g

Question 11 is not related with the given problem.

2每張試題卷得必填寫(學號)、(姓名) The ethyl acetate concentration in an alcoholic solution was determined by diluting a 10.00 ml sample 20.00 ml portion of the dilution was was refluxed with 40.00 mL. of 0,04672 M KOH: CHCOOCH, + OH CH;COO + CHOH [+] After cooling, the excess OH was back-titrated with 3,4I ml, of 0.05042 M H;SO.Calculate the number of grams of eth acetate (FM 88.11 g/mol) per 100 ml. of the original sample 11. The amount of Na:S;O) consumed in the back-titration is (a) 0.3439 mmole (b) 0.2625 mmole (c) 0.1874 mmole (c 0.0928 mmole 12. The number of grams of ethyl acetate is (a) 0.4305 g (b) 0.5655 g (c) 0.6718 g (d) 0.7288 g

2每張試題卷得必填寫(學號)、(姓名) The ethyl acetate concentration in an alcoholic solution was determined by diluting a 10.00 ml sample 20.00 ml portion of the dilution was was refluxed with 40.00 mL. of 0,04672 M KOH: CHCOOCH, + OH CH;COO + CHOH [+] After cooling, the excess OH was back-titrated with 3,4I ml, of 0.05042 M H;SO.Calculate the number of grams of eth acetate (FM 88.11 g/mol) per 100 ml. of the original sample 11. The amount of Na:S;O) consumed in the back-titration is (a) 0.3439 mmole (b) 0.2625 mmole (c) 0.1874 mmole (c 0.0928 mmole 12. The number of grams of ethyl acetate is (a) 0.4305 g (b) 0.5655 g (c) 0.6718 g (d) 0.7288 g

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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