Question

8. The rate law for the reaction H2O2 + 2H+212 + 2H2O is rate-k[H202][1]. The following mechanism has been suggested. H2O2+1 - HOI + OH - slow OH + H H20 fast HỘI + H+ + + I2 + H2O fast Identify all intermediates included in this mechanism. A) H and I D) Honly B) H and HOI E) H20 and OH C) HOI and OH 9. Which of the following statements is false? A) A catalyst increases the rate of the forward reaction, but does not alter the reverse rate. B) A catalyst alters the mechanism of reaction. C) A catalyst alters the activation energy D) A catalyst may be altered in the reaction, but is always regenerated. E) A catalyst increases the rate of reaction, but is not consumed. 10. Peroxodisulfate ion can oxidize iodide ions to iodine according to the balanced equation S.Ox?- +212504 +? The reaction is catalyzed by certain chemical species. Identify the catalyst in the following mechanism: step 1: Fe +21 Fe2+ +F step 2: SO2? + Fe2+ 250? + Fe A) Fe? B) 1 C) SO. D) Fe? E) SO

Answer 1

ģ. SML The pate lace clon the reaction Hz O2 + 24 + + 250GI2 +28,0 is sale = k[ H₂O2] [I] . The following mechanism has been suggested. & Q + IⓇ - HOI toho slow. OHO +H+ H₂O fast 10I + H+ +10 > Ig +H2O fast The intermediates of this reaction are > HOI and ono seases eld ene ne as a catalyst increases the pate of the forward penction, - but does not alter the recense sate Dove False by A catalyst allens the mechanism beaction - False es a catalyst alters the activation energy Phone. dy a catalyst may be altered in the beaction, but it Degenerated Tone. es a catalyst increases the rate of reaction, but is - not consumed True man LC 10. e PO Pepono disulfate non can onidize noclide ious to iodine according to the balanced equation 3,022- +250 —230,2- + I2 The mechanism is, step2.Fe3+ + 218 — Fe2+ + I2 Step 2 & 8 Og²- + Fe 2+ - 250, 2- + Fe3+ The beaction is catalyzed lay A. Feat as Fest is begenerated after the completion of the reaction. 2- Stained with CamScanner