Week 11 Quiz
Quiz by Kari Stone
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- Q1
Which of the following acids (listed with Ka values) and their conjugate base would form a buffer with a pH of 2.34?
HClO, Ka = 2.9 x 10-8
HF, Ka = 3.5 x 10-4
HCN, Ka = 4.9 x 10-10
HClO2, Ka = 1.1 x 10-2
HC7H5O2, Ka = 6.5 x 10-5
300s - Q2
Which of the following solutions is a good buffer system?
A solution that is 0.10 M NaCl and 0.10 M HCl
A solution that is 0.10 M HNO3 and 0.10 M KNO3
A solution that is 0.10 M HCN and 0.10 M NaCl
A solution that is 0.10 M HCN and 0.10 M LiCN
A solution that is 0.10 M NaOH and 0.10 M HNO3
300s - Q3
What is the concentration of hydroxide ions in pure water at 30.0∘C, if Kw at this temperature is 1.47E-14 (in M)?
Users enter free textType an Answer300s - Q4
Determine the pH of a 0.023 M HNO3 solution.
Users enter free textType an Answer300s - Q5
How many of the following are WEAK acids?
HCN HClO2 HNO3 H2PO4⁻
Users enter free textType an Answer300s - Q6
Identify the triprotic acid.
HClO4
HNO3
H3PO4
H2SO4
H2SO3
300s - Q7
The weaker the acid, then which of the following is TRUE?
The weaker the conjugate base.
The weaker the conjugate acid.
The stronger the conjugate base.
The stronger the conjugate acid.
300s - Q8
Determine the pH of a 0.22 M NaF solution at 25°C. The Ka of HF is 3.5 E10-5.
8.90
300s