Regents Review - Acids & Bases Worksheet With Answers
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1
2Name: _________________________________
1) ____ Which word equation represents a neutralization
6) ____ Which change in pH represents a hundredfold
reaction?
increase in the concentration of hydronium ions in a
a) base + acid salt + water
solution? 10
= 100… 2 steps DOWN on pH scale
2
b) base + salt water + acid
a) pH 1 to pH 2
c) pH 2 to pH 1
c) salt + acid base + water
b) pH 1 to pH 3
d) pH 3 to pH 1
d) salt + water acid + base
7) ____ Which indicator would best distinguish between a
solution with a pH of 3.5 and a solution with a pH of 5.5?
2) ____ An aqueous solution of lithium hydroxide contains
hydroxide ions as the only negative ion in the solution.
a) bromthymol blue
c) litmus
Lithium hydroxide is classified as an
b) bromcresol green
d) thymol blue
a) aldehyde
c) Arrhenius acid
b) alcohol
d) Arrhenius base
8) ____ The data collected from a laboratory titration are
used to calculate the
3) ____ One alternate acid-base theory states that an acid is
a) rate of a chemical reaction
an
b) heat of a chemical reaction
a) H
donor
c) OH
donor
c) concentration of a solution
+
−
b) H
acceptor
d) OH
acceptor
d) boiling point of a solution
+
−
4) ____ Which substance is always a product when an
9) ____ When one compound dissolves in water, the only
Arrhenius acid in an aqueous solution reacts with an
positive ion produced in the solution is H
O+(aq). This
3
Arrhenius base in an aqueous solution?
compound is classified as
a) HBr
b) H
O c) KBr d) KOH
a) a salt
c) Arrhenius acid
2
b) a hydrocarbon
d) Arrhenius base
5) ____ Which salt is produced when sulfuric acid and
calcium hydroxide react completely?
10) ____ One acid-base theory defines a base as an
a) CaH
b) CaO c) CaS d) CaSO
a) H
donor
c) OH
donor
+
+
2
4
b) H
acceptor
d) OH
acceptor
+
+
Base your answers to questions 11 and 12 on the information below.
In performing a titration, a student adds three drops of phenolphthalein to a flask containing 25.00 milliliters of HCl(aq). Using a buret,
the student slowly adds 0.150 M NaOH(aq) to the flask until one drop causes the indicator to turn light pink. The student determines
that a total volume of 20.20 milliliters of NaOH(aq) was used in this titration.
11) The concentration of the NaOH(aq) used in the titration is expressed to what number of significant figures? 25.00 = 4 sf, 0.150 = 3
sf, 20.20 mL = 4 sf… least # sf = 3 sig figs
12) Calculate the molarity of the HCl(aq) used in this titration. Your response must include both a correct numerical setup and the
calculated result.
MaVa = MbVb
(Ma) (25.00 mL) = (0.150 M)(20.20 mL)
25.00 mL
25.00 mL
Ma = 0.121 M
13) A student completes a titration by adding 12.0 milliliters of NaOH(aq) of unknown concentration to 16.0 milliliters of 0.15 M
HCl(aq). What is the molar concentration of the NaOH(aq)?
MaVa = MbVb
(0.15 M) (16 mL) = (Mb)(12 mL)
12.0 mL
12.0 mL
Mb = 0.20 M
Regents Review – Acids & Bases
1-2
Created: February 2010
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