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Kinetics and Equilibrium
Organic Chemistry
Redox
Acids, Bases, and Salts
Nuclear
100

A reaction is most likely to occur when reactant particles collide with the proper ... (2 things)

What is energy and orientation

100
A molecule of an organic compound contains at least one atom of which element?
What is carbon
100

Which metals are less active than H2?

What are Cu, Ag, and Au

100

According to the Arrhenius theory, a substance that is classified as an acid will always yield ...

What is H+ or H3O+
100
What is the decay mode of technetium-99?
What is beta decay
200

A student observed that when sodium hydroxide was dissolved in water, the temperature of the water increased. The student should conclude that the dissolving of sodium hydroxide is ... (endothermic or exothermic)

What is exothermic

200
A carbon-carbon triple bond is found in a molecule belonging to which homologous series?
What is alkyne
200

Describe the flow of electrons and ions in a voltaic cell.

What is electrons flow through the wire from the anode to the cathode, then negative ions flow through the salt bridge to complete the circuit

200

An acid can be defined as a proton...

What is donor

200

Which equation represents artificial transmutation? 

A) H2O → H+ + OH– 

B) UF6 + 6 Na → 6 NaF + U 

C) 238 92U → 234 90Th + 4 2He 

D) 27 13Al + 4 2He → 3015P + 1 0n

What is (D)

300

Compare the rates of the forward and reverse reactions of a system at equilibrium.

What is the rates are equal

300

Ethanol and dimethyl ether have different chemical and physical properties because they have different...

What is functional groups

300

Describe the energy change in an operating electrolytic cell

What is from electrical to chemical energy

300

Which volume of 0.10 M NaOH(aq) exactly neutralizes 15.0 milliliters of 0.20 M HNO3(aq)?

What is 30. mL

300
Which nuclear emission has no charge and no mass?
What is gamma radiation
400

In a chemical reaction, the difference between the potential energy of the products and the potential energy of the reactants is equal to the

What is heat of reaction

400

The formula C5H11OH represents an...

What is an alcohol

400
Write the half-reaction equation that represents the reduction of an iron(II) ion
What is Fe+2 + 2e --> Fe
400

As the pH of a solution is changed from 3 to 6, the concentration of hydronium ions

What is decreases by a factor of 1000 

400

Which reaction is accompanied by the release of the greatest amount of energy?

(1) combustion of 10. g of propane

(2) electrolysis of 10. g of water

(3) nuclear fission of 10. g of uranium

(4) oxidation of 10. g of iron

What is (3)

500

2SO2(g) + O2(g) ↔ 2SO3(g) + 392 kJ 

State, in terms of the concentration of SO3(g), what occurs when more O2(g) is added to the reaction at equilibrium.

What is the concentration of SO3(g) increases

500

Draw the structural formula for propanal.

What is correct answer

500

Given the balanced ionic equation representing the reaction in an operating voltaic cell:

Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s)

The flow of electrons through the external circuit in this cell is from the ... (identify anode and cathode)

What is Zn anode to the Cu cathode

500

Describe then number of ions in solution and conductivity of the solution as more NaCl(s) is dissolved in a dilute, unsaturated NaCl(aq) solution.  

What is number of ions increases and conductivity increases

500

Write the nuclear equation for the decay of radium-226

What is  22688Ra → 22286Rn + 42He