Part 1: (a) Use a table of vapor pressure of water at various temperatures to de

Question

Part 1: (a) Use a table of vapor pressure of water at various temperatures to determine the partial pressure of water vapor, PH,o 92.5 torr Part 2: (b) Calculate the partial pressure of oxygen, Po, using the ratio of the H20 and O, gases in the molecular-level image and Dalton's law of partial pressures 463 torr Part 3: (c) What is the total pressure of gas collected, Ptotal? 555 torr Part 4: (d) If the volume of the collected gas is 155.0 mL, how many moles of oxygen were collected? 0.003557moles O, Part 5 out of 5 (e) If the balanced equation for the reaction that produced the oxygen is 2KCIO3(s) 2KCI(s) + 3O2(g), how many moles of KC103 reacted? moles KCIO3 3 attempts left Check my work Next part

Explanation / Answer

Q4.

if V = 155 mL, then find moles of O2 collected

PV = nRT

n = PV/(RT)

P-O2 = 555-92.5 = 463

then use P = 463 torr

then

n = (463*0.155)/(62.4*298)

n = 0.003859 moles of O2

ratio is:

3 mol of O2 = 2 mol of KClO3

0.003859 mol of O" = --> 2/3*0.003859 = 0.0025728 mol of KclO3

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