CHM 142 Exam 2 Questions and Correct
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Compounds that contain electron-rich ___ are weak bases
Ans: N
True or false: Amines such as CH3CH2NH2 are weak bases
Ans: True
Soluble hydroxides are _______ bases
Ans: strong
Which of the following is NOT a conjugate acid-base pair?
H2S/HS-
NH3/NH2-
H3PO4/H2PO4-
H2PO4-/PO4^3-
HCO3-/CO3^2-
Ans: H2PO4-/PO4^3-
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Which is a stronger acid? HF or HBr
Ans: HBr
Strong acids dissociate _________ into ions in water.
Ans: Completely
Large Ka value = _____ pKa value and vice versa
Ans: low
Ka * Kb =
Ans: Kw (1E-14)
The grater the value of Kb, the _____ the base.
Ans: Stronger
A 0.015M solution of butanoic acid, CH3CH2CH2COOH, contains
1.51E-3M H30+. What is the Ka of butanoic acid?
Ans: 1.5E-5
True or false: A weak base is a weak electrolyte
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