August 2002 Chemistry Regents #31-40
Other Regents Exams
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|31 Compared to the nonmetals in Period 2, the metals in
Period 2 generally have larger
(1) ionization energies
(3) atomic radii
(4) atomic numbers
|3||Table S, look them up|
|32 Which of the following Group 2 elements has the lowest
first ionization energy?
(1) Be (3) Ca
(2) Mg (4) Ba
|4||Table S, look them up|
|33 The table below shows the normal boiling point of four
||1||Strongest IMF, highest BP, also H-bonding|
|34 According to Table I, which salt releases energy as it
(1) KNO3 (3) NH4NO3
(2) LiBr (4) NaCl
|2||exo, DH is negative|
|35 During a laboratory activity, a student combined two
solutions. In the laboratory report, the student wrote ďA yellow color
statement represents the studentís recorded
(1) conclusion (3) hypothesis
(2) observation (4) inference
|2||observation, I refuse to explain this|
|36 How many moles of solute are contained in 200
milliliters of a 1 M solution?
(1) 1 (3) 0.8
(2) 0.2 (4) 200
|37 Increasing the temperature increases the rate of a
(1) lowering the activation energy
(2) increasing the activation energy
(3) lowering the frequency of effective collisions between reacting molecules
(4) increasing the frequency of effective collisions between reacting molecules
|4||reactions= effective collisions|
|38 Given the equilibrium reaction in a closed system:
H2(g) + I2(g) + heat-->2 HI(g)
What will be the result of an increase in temperature?
(1) The equilibrium will shift to the left and [H2] will increase.
(2) The equilibrium will shift to the left and [H2] will decrease.
(3) The equilibrium will shift to the right and [HI] will increase.
(4) The equilibrium will shift to the right and [HI] will decrease.
|3||shifts right, HI will increase|
|39 Which sample has the lowest entropy?
(1) 1 mole of KNO3(l) (3) 1 mole of H2O(l)
(2) 1 mole of KNO3(s) (4) 1 mole of H2O(g)
|2||Solids lowest gases highest|
|40 Which of the following compounds is least soluble
(1) copper (II) chloride
(2) aluminum acetate
(3) iron (III) hydroxide
(4) potassium sulfate
|3||Table F, Insoluble=least soluble|