Data for the Synthesis of Znl2 1. a. Mass of empty test tube: 1. c. Mass of test

Question

Data for the Synthesis of Znl2 1. a. Mass of empty test tube: 1. c. Mass of test tube containing zinc: t - 40.5201 Mass of zine 3. b. Mass of test tube containing zinc and iodine: 72270g Mass of iodine: 32.00 4. Observation of reaction (write your obsereutions in the space below) The sowtion oe come veu then to A brongh-red cacr 414.003 44.420 6. Mass of test tube with boiling chip a. 6. f. Mass of test tube with boiling chip and recovered Znl /y. C0y 1:4180- Mass of recovered Znlzi 7. Mass of test tube with unreacted zinc: Mass of unreacted zinc He's af.kf..J 034 6.247 Analysis of Znl2 I. Theoretical and Percentage Yield A. Calculate the moles of l2 consumed in the reaction (Hint: All iodine is taken to be consumedy 53.8g/wol B. Based on the number of moles of l2 consumed, what is the theoretical yield of Znl,? Zn11" (153 /nol)-(65. 38a/wol): zna (o. 126 motes) (319.18 Formula mass 319.189/mol M /mol

Explanation / Answer

For D bit,the mass of zinc consumed is (mass of zinc initially present)-(mass of zinc finally left) =0.345g-0.247g=0.098g

For E bit,number of moles of zinc is (mass of zinc)/(molar mass)=0.098/65.38=0.0015mol

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