Honors Chemistry Test 2 Questions with Answers
Two reactant particles collide with proper orientation. The collision will be effective if the particles have - Answer-sufficient kinetic energy
Given the equation: I2(s)--> I2(g) Which phrase describes this change? - Answer-endothermic physica...
Honors Chemistry Test 2 Questions with
Answers
Two reactant particles collide with proper orientation. The collision will be effective if the
particles have - Answer-sufficient kinetic energy
Given the equation: I2(s)--> I2(g) Which phrase describes this change? - Answer-
endothermic physical change
Given the balanced equation representing a reaction: Cu + S --> CuS + energy Which
statement explains why the energy term is written to the right of the arrow? - Answer-
Energy is released as the bonds in CuS form.
A thermometer is in a beaker of water. Which statement best explains why the
thermometer reading initially increases when LiBr(s) is dissolved in the water? -
Answer-The dissolving of the LiBr(s) in water is an exothermic process.
Which change is exothermic? - Answer-freezing of water.
The burning of wood is best described as an - Answer-exothermic chemical change
Based on Table I, which equation represents a reaction with the greatest difference
between the potential energy of the products and the potential energy of the reactants?
- Answer-4Al(s) + 3O2(g) --> 2Al2O3(s)
Which value is defined as the difference between the potential energy of the products
and the potential energy of the reactants during a chemical change? - Answer-heat of
reaction
Based on Table I, what is the H value for the production of 1.00 mole of NO2(g) from its
elements at 101.3 kPa and 298 K? - Answer-+33.2 kJ
Given the balanced equation representing a reaction at 101.3 kPa and 298 K: N2(g) +
3H2(g) --> 2NH3(g) + 91.8 kJ Which statement is true about this reaction? - Answer-It is
exothermic and H equals -91.8 kJ.
According to Reference Table I, which statement best describes the formation of HI(g)?
- Answer-It is endothermic, and heat is absorbed.
What occurs when a reaction reaches equilibrium? - Answer-The rate of the forward
reaction is equal to the rate of the reverse reaction.
The addition of a catalyst to a system at equilibrium will increase the rate of - Answer-
both the forward and reverse reaction
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