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What is that Formula
Chapter 14
Chapter 15
Write out of Formula
100
finding how much of ethanol in alcohol in percent.
What is weight percent, molarity of solute, or mole fraction.
100
Percent of ethanol in a water mixture of 46.1g of ethanol and 162g of water.
What is 22.2%
100
The disappearance rate of of PH3 and formation of P4 and H2. The balance equation is 4 PH3 --> P4(g) + 6 H2(g).
What is -1/4(Δ(PH3)/Δt) = Δ(P4)/Δt = 1/6 (ΔH2/Δt).
100
Rate of reaction
What is Rate = change in concentration/change in time?
200
finding molar solubility of oxygen.
What is Henry's law?
200
The concentration in grams per kilograms of O2 in water in equilibrium with air at 25C and 1.0 bar. With the constant of O2 is 1.3 x 10^-3 mol/kg x bar. knowing that the mole fraction of oxygen is 0.21.
What is 0.0087g/kg?
200
CO--(1) 5.1 x 10^-4, (2) 5.1 x 10^-4, (3) 1.53 x 10^-3__NO2--(1) 0.35 x 10^-4, (2) 0.70 x 10^-4, (3) 0.35 x 10^-4__Initial Rate--(1) 3.4 x 10^-8, (2) 6.8 x 10^-8, (3) 10.2 x 10^-8 -- The reaction order of CO and NO2 using this data.
What is both is first order?
200
Osmotic pressure.
What is II = cRT ?
300
finding the vapor pressure of water over a solution.
What is Raoult's Law?
300
change in vapor pressure of water in a mixture of 651g of ethylene glycol and 1.5kg of water at 90C. Pure water vapor pressure at 90C is 525.8 mm Hg. Molar mass of ethylene is 62.07g.
What is -59mm Hg?
300
The constant rate of C12 H22 O11 can found if the half life takes 3.21h.
What is 0.216 h^-1 ?
300
freezing point depression.
What is ΔTfp = Kfp msolute ?
400
Finding the activation energy Ea.
What is Arrhenius Equation?
400
The boiling point of 0.144g Eugenol (C10 H12 O2) dissolved in 10.0g of benzene. Kbp of of Benzene is 2.53 C/m and pure boiling point of it is 80.10 C. C=12.01, H=1.01, O=16.00.
What is 80.32 C?
400
1/T (K^-1)-- (1) 9.497 x 10^-4, (2) 9.990 x 10^-4 __ln k -- (1) 0.513, (2) -0.968 The activation energy (Ea) from this data. Where R is the gas constant value of 8.314510 x 10^-3 kj/K x mol.
What is 250 kj/mol-rxn?
400
mole fraction
What is Xa = nA/nA + nB + nC ....
500
finding rate constant and rate reaction.
What is rate law?
500
The osmotic pressure (in mm Hg) of a 10 ml solution containing 7.68mg of the solution with a concentration of 1.429 x 10^-3 mol/L at 25 C. R is 0.082057 L x atm/ K x mol.
What is 26.57mm Hg?
500
k1 = 2.15 x 10^-8 L/(mol x s) at 6.5 x 10^2 K (T1) ---k2 = 2.39 x 10^-7 L/(mol x s) at 7.0 x 10^2 k (T2) The activation energy (Ea) using this data.
What is 180 kj/mol-rxn?
500
Arrhenius equation having two different temperatures.
What is ln(k2/k1) = -(Ea/R) ((1/T2) - (1/T1))?