Which of the following pairs would be appropriate to make a buffer of pH 4.0? Group of
Question:
Which of the following pairs would be appropriate to make
a buffer of pH 4.0?
Group of answer choices
a. H2CO3 and NaHCO3
b. HNO2 and HNO3
c. HClO and NaClO
d. HCHO2 and KCHO2
e.HI and NaI
#2
Which of the following will form a buffer?
Group of answer choices
a. ClO2- with slowly added NaOH
b. KF with slowly added NaOH
c. HClO4 with slowly added NaOH
d. KClO (aq) with slowly added HCl
e. HC2H3O2 with slowly added HC
#3
Which of the following is an acidic salt?
Group of answer choices
a. KCl
b. NaNO3
c. NH4Br
d. NaC2H3O2
e. HCl
#4
When the following redox reaction is correctly balanced:
BrO3 - + Cr(OH)3(s) → Br- + CrO4 2-(basic)
what is the coefficient in front of OH-
a. 12
b. 10
c. 1
d. 6
e. 4
#5
What is the pH of 0.15 M KClO (aq)?
a. 10.35
b. 9.83
c. 13.18
d. 3.65
e. 4.17
#6
What is [C2O4 2-] in a 0.1 M solution of H2C2O4 dissolved in pure water?
a. 1.0 x 10-14 M
b. 6.1 x 10-5 M
c. 6.5 x 10-2 M
d. 1.6 x 10-10 M
e. 8.1 x 10-2 M
#7
Which of the following ions is classified incorrectly?
a. K+ neutral cation
b. NH4 + acidic cation
c. Sr2+ neutral cation
d. NO2 - neutral anion
e. C2H3O2 - basic anion
#8
When the following redox reaction is correctly balanced:
NO (g) + Pb2+ → NO3 - + Pb (s) (acidic)
what what is the coefficient in front of NO(g) ?
a. 2
b. 6
c. 3
d. 8
e. 1
#9
When the following redox reaction is correctly balanced:
Cl2 + MnO2 (s) → ClO3 - + Mn2+ (acidic)
what is the coefficient in front of H2O ?
Group of answer choices
a. 5
b. 4
c. 10
d. 1
e. 8
#10
For the reaction in the previous problem, which substance is
the reducing agent?
Group of answer choices
a. ClO3 -
b. H+
c. MnO2 (s)
d. Cl2
e. Mn2+
Organic Chemistry
ISBN: 978-1118133576
11th edition
Authors: Graham Solomons, Craig Fryhle, Scott Snyder