2 Using the ideal gas law calculate the moles of O2 collecte

A. Order of Reaction BATH TEMPERATURE Solution 1 Buret (mL) reading Vol. ofO2 (mL) Time 10.0 000- GO ) 51K 62 Slope Slope= 1 . 867

Solution

Here you got the slope is rate constant, Rate or r = k [concentration]

k₁ = 1.807 and k2 =0.0642

then compare k₁ and k₂ to compare rates

k₁/k₂ = 1.807/0.0642 = 28.14641

rate of solution 1 is 28 times fatter than Solution 2

Ideal gas equation , PV = nRT

P is the pressure = 298 Hg = 0.3921 atm

V is the volume = 14 ml

n = number of moles. ?

R = universal gas constant( 0.08205 L atm / mol·K)

T is the temperature =33 + 273 = 306 K

solution is

n = PV/RT = (0.3921 x 0.014 L) / (0.08205 x 306 K )

= 0.0054894/ 25.245 = 0.000217429 moles of oxygen.