Atomic, Compound, IMF Structures and Properties
Chemical Reactions/Kinetics
Equilibrium
Acids and Bases
Thermodynamics
100

The molecular geometry of SO2

What is bent?

100

The rate law for the reaction: O3(g)+NO(g)→O2(g)+NO2(g)

What is Rate=k[O3][NO]?

100

When K>>1 the reaction is _____-favored; equilibrium lies to the _____

What is product, right?

100

The species most prevalent at the equivalence point with a titration of HNO3 and NaOH.

What is Na+ and NO3- ?

100

The type of reaction that occurs when △H is negative (exothermic or endothermic)

What is exothermic?

200

The element that has the greatest first ionization energy between P and S.

What is P?

200

The net ionic equation when solutions of CuSO4 and AgNO3 are mixed, a precipitate forms.

What is SO42-(aq)+2Ag+→Ag2SO4(s)?

200

The equilibrium constant expression of N2(g)+3H2(g) ⇔2NH3(g)

What is Kc=[NH3]2/([N2][H2]3)?

200

One of the following that can be mixed to create a buffer.

HNOmixed with NaNO3

HNO2 mixed with KNO2

NH3 mixed with HCl

NaOH mixed with NaCl

What is HNO2 mixed with KNO2?

200

The reaction is spontaneous only at high temperatures, what is △H and △S?

What is △H = + and △S = + ?

300

Rank the following from highest boiling point to following: NO3-, SiO2, NaCl.

What is SiO2, NaCl, NO3-?

300

Step 1: NO+Br2→NOBr2 (fast)

Step 2: NOBr2+NO→2NOBr (slow)

The rate law for this mechanism.

What is Rate=k[NO]2[Br2]?

300

The Ksp for PbCl2 given that the molar solubility of PbCl2 is 0.014 M.

What is Ksp=1.1x10-5?

300

SrCl2 is an example of this kind of salt (basic, acidic or neutral)

What is neutral?

300

A coffee cup calorimeter contains 120g of water at 20 degrees C. A reaction is carried out in the calorimeter, and the final temperature of the water is 35.6. (Specific heat of water is 4.18 J/g (C)). Calculate qH20 (Joules)

What is 7820 J?

400

The energy of 1 photon of yellow light that has a wavelength of 589 nm.

What is 3.37 x 10-19J?

400

A gaseous mixture made from 6 g of O2 and 9g of CH4 is placed in a 15.0 L vessel at 0 degrees C. What is the partial pressure of each gas, and what is the total pressure in the vessel?

What is 1.12 atm?

400

Given 4Al(s)+3O2(g)⇔2Al2O3(s) and △H=-3351 kj. Increasing the temperature will shift the reaction ____(left, right or no change) and K will _____(increase, decrease, remain the same).

What is left and decrease?

400

The pH of a .085 M HNO2 solution (Ka = 4.5 x 10-4) when .10 M of KNO2 is added.

What is 3.42?

400

The joules of heat needed to boil 40 grams of water. The heat of vaporization for water is 2260 J/g. 

What is 90,400 J?

500

Carbon absorbs energy at a wavelength of 150. nm. The total amount of energy emitted by a carbon sample is 1.98x105 J. Calculate the number of carbon atoms present in the sample, assuming that each atom emits one photon.

What is 1.50x1023 atoms carbon?

500

A certain first-order reaction is 45.0% complete in 65 seconds. What are the values of the rate constant and the half-life for this process?

What is k=9.2x103 s-1 and 75 seconds?

500

At 2200 degrees Celsius, Kp=0.050 for the reaction: N2(g)+O2(g)⇔2NO(g) The partial pressure of NO in equilibrium with N2 and O2 that were placed in a flask at initial pressures of 0.80 and 0.20 atm, respectively.

What is PNO=7.8x10-2 atm?

500

The pH of a buffered solution containing .25 M NH3   (Kb = 1.8 x 10-5) and .40M NH4Cl. 

What is 9.05?

500

The enthalpy of formation of C2H5OH, from the heats of combustion:

C(S)+O2(g)→CO2(g)   △H = -394 kJ/mol


H2(g)+ 1/2 O2 (g) → H2O   △H = -242 kJ/mol


C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(g) 

△H = -1236kJ/mol 


 What is -278 kJ/mol

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