Question

QUESTION 1 A student mixed the following reactants, using the general procedure for the experiment: 12.28 mL of 0.1000M KI, 20.75 mL of 0.001000 M Na2SO3, 14.22 mL of 0.04000M KBrO3, and 12.22 ml of 0.1000M HCI. It took about 75 seconds for the mixture to turn blue. Calculate the concentration of H+ in the mixture after all of the solutions have been combined QUESTION 2 Consider the reaction 4NO2(g)+ O2(g) → 2N205(g) At a particular time during the reaction, nitrogen dioxide is being consumed at the rate of 0.0031 M/s. What rate is the molecular oxygen being consumed? QUESTION 3 is the reducing agent. In the lodide Clock reaction is the oxidizing agent and 61€ + Br03 – +6H+ Starch 312 + Br” + 3H20 O Bromate, iodide O bromide, iodide O lodine, bromate O lodide, bromate

Answer 1

solya 10. Experiment 12-28m) of 0.1000 M KC, 20.75 ml of 0.001800 M Nq, 502 | 14.22 ml of 0.04000 M Koros, and $ 12.22 ml of D-1000 ACE +12-22 mi Total Htims= Volume X molaritiky = 12-22 X 0.1000 mm Total volume 12.28 ml 20.75 ml 14.227 = 59.47mi (nt molarily= 19-22 X0-1000 59.47 = 0.0211 2711 4 No2lg2 of 02t9, -+ 2N20519 rate of amsumption of No2 lg) 20.0031MIS 7 dienos = 4 al Contes - -d027= 1d[NO2 ] 4 d frantz) = 0.0031 21022 =-446-0031 -0.000775 Mls

6I + Bro + 6ht tstarch fis. 312 + Br + 3H20 Ho e a reduction reducing olidising olidation agent - I - Dodide agent Broz? = Bromak. option can __

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