A solution is prepared at 25C that is initially 0.50 M in chlorous acid (HClO2), a...
A solution is prepared at 25C that is initially 0.50 M in chlorous acid (HClO2), a weak acid with Ka= 1.1 x 10^-2, and 0.4M in (NaClO2). Calc the pH of the solution. Round 2 decimal places
Homework Answers
Ka = 1.1*10^-2
pKa = - log (Ka)
= - log(1.1*10^-2)
= 1.959
use:
pH = pKa + log {[conjugate base]/[acid]}
= 1.959+ log {0.4/0.5}
= 1.862
Answer: 1.86
Add Answer to:
A solution is prepared at 25C that is initially 0.50 M in
chlorous acid (HClO2), a...
A chemistry graduate student is given 125. mL of a 1.70 M chlorous acid (HNO2) solution....
A chemistry graduate student is given 125. mL of a 1.70 M chlorous acid (HNO2) solution. Chlorous acid is a weak acid with Ka= 1.1 x 10^-2. What mass of NaClO2 should the student dissolve in the HClO2 solution to turn it into a buffer with pH = 2.48? You may assume that the volume of the solution doesn't change when the NaClO2 is dissolved in it. Be sure your answer has a unit symbol, and round it to 2...
Objective Knowteage Check A solution is prepared at 25 C that is initially 0.23 M in...
Objective Knowteage Check A solution is prepared at 25 C that is initially 0.23 M in chlorous acid (HCIO,), a weak acid with K-1.1 x 10,and 0.23 M in sodium chlorite (NaCI0,) Calculate the pH of the solution. Round your answer to 2 decimal places. pH- X
A solution is prepared at 25 Celsius that is initially 0.35 in propanoic acid, a weak...
A solution is prepared at 25 Celsius that is initially 0.35 in propanoic acid, a weak acid with ka 1.3 x 10-5 , and 0.48 M in sodium propanoate. Calculate the pH of the solution. Round your answer to 2 decimal places.
At a certain temperature, the percent dissociation (ionization) of chlorous acid, HClO2, in a 1.43 M...
At a certain temperature, the percent dissociation (ionization) of chlorous acid, HClO2, in a 1.43 M solution water is 8.0%. Calculate the value of Ka for chlorous acid at this temperature.
7. How many grams of chlorous acid must be dissolved in water to make 100 mL...
7. How many grams of chlorous acid must be dissolved in water to make 100 mL of a HClO2 solution whose pH is 2.40? Ka for HClO2 = 1.1 x 10-2. Molar mass of HClO2 = 68.5 g/mol.
A 75 mL solution of .400 M chlorous acid is titrated with a .125 M solution...
A 75 mL solution of .400 M chlorous acid is titrated with a .125 M solution of sodium hydroxide. What is the pH of the solution after 380 mL of the sodium hydroxide solution has been added? Ka for chlorous acid is 1.1 x 10-2. (hint: your answer should contain four significant figures)
A 75 mL solution of .400 M chlorous acid is titrated with a .125 M solution...
A 75 mL solution of .400 M chlorous acid is titrated with a .125 M solution of sodium hydroxide. What is the pH of the solution after 40 mL of the sodium hydroxide solution has been added? Ka for chlorous acid is 1.1 x 10-2. (hint: your answer should contain three significant figures)
1.)A 75 mL solution of .400 M chlorous acid is titrated with a .125 M solution...
1.)A 75 mL solution of .400 M chlorous acid is titrated with a .125 M solution of sodium hydroxide. What is the pH of the solution after 20 mL of the sodium hydroxide solution has been added? Ka for chlorous acid is 1.1 x 10-2. (hint: your answer should contain three significant figures) 2.)The compound MX has a Ksp = 4.58 × 10−6. Calculate the concentration of M+ ions in a solution made by adding 4.18 g of MX to...
Determine the pH of a 0.705 M chlorous acid solution with a Ka = 1.1 x 10–2. ...
Determine the pH of a 0.705 M chlorous acid solution with a Ka = 1.1 x 10–2. - report the answer in three significant figures
some acids + bases questions. please answer all parts! Thank you so much! 3a. Cyanic acid,...
some acids + bases questions. please answer all parts! Thank you so much! 3a. Cyanic acid, HCNO, is a weak monoprotic acid with Ka = 2.0 × 10−4.Calculate the pH of a 0.820 M solution of this acid. Report your answer to TWO places past the decimal. 3b. Hypobromous acid, HBrO, is a weak monoprotic acid with Ka = 2.8 × 10−9.Calculate the pH of a 0.312 M solution of this acid. Report your answer to TWO places past the...
Objective Knowteage Check A solution is prepared at 25 C that is initially 0.23 M in chlorous acid (HCIO,), a weak acid with K-1.1 x 10,and 0.23 M in sodium chlorite (NaCI0,) Calculate the pH of the solution. Round your answer to 2 decimal places. pH- X
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago