Chem 102 - General Chemistry II » Winter 2021 » Quiz 2

Need help with your exam preparation?

Existing Quiz Clients Login here
Question #1
In the Arrhenius concept, what substance, when dissolved in water, increases the concentration of the hydronium-ion? 
A.   Minerals
B.   Ion
C.   Alkaline
D.   Acid
Question #2
True or False? Experimentally, it is found that all neutralizations involving strong acids and strong base have the same ΔH° (-55.90 kJ/mole of hydronium-ion), which indicates that the same reaction occurs in each neutralization.
A.   TRUE
B.   FALSE
Question #3
In the Bronsted-Lowry concept, how is a base defined? 
A.   Substance that donates protons
B.   Substance that donates protons and accepts protons
C.   Substance that donates protons, accepts protons and accepts an electron pair
D.   Substance that accepts protons
E.   Substance that accepts an electron pair
Question #4
In the Lewis concept, how is a base defined? 
A.   Substance that donates protons
B.   Substance that accepts and donates an electron pair and donates protons
C.   Substance that donates an electron pair
D.   Substance that accepts an electron pair
E.   Substance that accepts an electron pair and donates an electron pair
Question #5
What is an amphiprotic species? 
A.   Substance that behaves as an acid or a base
B.   Substance that accepts protons
C.   Substance that donates protons
D.   Substance that donates and accepts protons
E.   Substance that donates and accepts protons and behaves as an acid or a base
Question #6
What is the conjugate-acid to NH3? 
A.   H2SO4
B.   NH2
C.   NH4+
D.   HCO3
Question #7
Which are conjugate-pairs?  
A.   H2Te and HI
B.   H2CO3 and HCO3–
C.   H2Te and HI, HClO4 and BrO4– and H2CO3 and HCO3–
D.   H2Te and HI and H2CO3 and HCO3–
E.   HClO4 and BrO4–
Question #8
Consider the reaction: H2S + CN– <===> HS– + HCN.  If CN– is a stronger base than HS–, which direction do you predict the reaction to go? 
A.   There is not enough information to predict
B.   Neither direction
C.   Reactions moves in the forward direction
D.   Reaction moves in the reverse direction

Need help with your exam preparation?

Existing Quiz Clients Login here