Homework Answers
Due to Common Ion Effect, the Concentration of the HNO2
Decreases.
----- So HNO2 ionization = Decreases
------The concentration of H+ = Decreases
As H+ Decreases pH increases
------pH = Increases
Add Answer to:
At a concentration of 1 M, the weak acid HNO2 is 2% ionized and the pH of the solution is 1.7. What happens when KNO2(s...
At a concentration of 1 M, the weak acid HNO2 is 2% ionized and the pH...
At a concentration of 1 M, the weak acid HNO2 is 2% ionized and the pH of the solution is 1.7. What happens when KNO2(s) is dissolved into the solution?
At a concentration of 1 M, the weak acid HNO, is 2% ionized, and the pH...
At a concentration of 1 M, the weak acid HNO, is 2% ionized, and the pH of the solution is 1.7. What happens when KNO, (s) is dissolved into the solution? The extent of HNO, ionization The concentration of H+ The pH You need to prepare 100.0 mL of a pH 4.00 buffer solution using 0.100 M benzoic acid (pK. = 4.20) and 0.180 M sodium benzoate. How many milliliters of each solution should be mixed to prepare this buffer?...
please help me with these questions! At a concentration of 1 M, the weak acid HNO,...
please help me with these questions!
At a concentration of 1 M, the weak acid HNO, is 2% ionized, and the pH of the solution is 1.7. What happens when KNO,() is dissolved into the solution? The extent of HNO, ionization The concentration of H+ The pH If a buffer solution is 0.260 M in a weak acid (K, = 6.0 x 10 ) and 0.500 M in its conjugate base, what is the pH? A 0.194 g sample of...
3. Nitrous acid, HNO2, has a Ka of 7.1x104. A solution that has a concentration of...
3. Nitrous acid, HNO2, has a Ka of 7.1x104. A solution that has a concentration of 0.60 M HNO2 has been made. (a) What is the pH of this solution? (b) What is the pH if the original solution contained 0.01 M of KNO2 dissolved?
A chemistry graduate student is given 450. mL of a 0.90 M nitrous acid (HNO2) solution....
A chemistry graduate student is given 450. mL of a 0.90 M nitrous acid (HNO2) solution. Nitrous acid is a weak acid with K-4.5x10 . What mass o KNO2 should the student dissolve in the HNO2 solution to turn it into a buffer with pH-3.20? You may assume that the volume of the solution doesn't change when the KNO2 is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.
Find the pH of a 0.246 M KNO2 solution. (The Ka of nitrous acid, HNO2, is...
Find the pH of a 0.246 M KNO2 solution. (The Ka of nitrous acid, HNO2, is 4.6×10−4.)
A buffer solution that is 0.340 M in HNO2 and 0.340 M in KNO2 has a...
A buffer solution that is 0.340 M in HNO2 and 0.340 M in KNO2
has a pH of 3.35. The addition of 0.01 mol of to 1.0 L of H3O+ this
buffer would cause the pH to _________ . The capacity of this
buffer for added H3O+ could be increased by the addition of 0.127
mol CHOICES: INCREASE SLIGHTLY,
INCREASE BY 2 UNITS, DECREASE SLIGHTLY, DECREASE BY 2 UNITS, NO
CHANGE.
SECOND CHOICES: OF THE WEAK ACID, OF THE SALT...
6. A0.68 M solution of a weak acid HA is 0.35 % ionized. What are the...
6. A0.68 M solution of a weak acid HA is 0.35 % ionized. What are the H, A, and HA concentrations at equilibrium? What is K? 7. The K, for glyoxylic acid, HC HO, is 6.6 x 104. What is the pH of a 0.45 M solution of the acid? What is the % ionization of the acid at this concentration?
A solution of nitrous acid, HNO2 is 6.3x10^-3 M, which is a weak acid with Ka=7.2x10^-4....
A solution of nitrous acid, HNO2 is 6.3x10^-3 M, which is a weak acid with Ka=7.2x10^-4. Calculate: [HNO2] [NO2] pH What is the concentration of a nitrous acid solution with a pH of 2.21
Find the pH of a 0.200 M HNO2 solution. -Remember that this is a weak acid....
Find the pH of a 0.200 M HNO2 solution. -Remember that this is a weak acid. HNO2 (aq) + H2O (l) = H3O+ (aq) + NO2- (aq)
At a concentration of 1 M, the weak acid HNO2 is 2% ionized and the pH of the solution is 1.7. What happens when KNO2(s) is dissolved into the solution?
At a concentration of 1 M, the weak acid HNO, is 2% ionized, and the pH of the solution is 1.7. What happens when KNO, (s) is dissolved into the solution? The extent of HNO, ionization The concentration of H+ The pH You need to prepare 100.0 mL of a pH 4.00 buffer solution using 0.100 M benzoic acid (pK. = 4.20) and 0.180 M sodium benzoate. How many milliliters of each solution should be mixed to prepare this buffer?...
please help me with these questions!
At a concentration of 1 M, the weak acid HNO, is 2% ionized, and the pH of the solution is 1.7. What happens when KNO,() is dissolved into the solution? The extent of HNO, ionization The concentration of H+ The pH If a buffer solution is 0.260 M in a weak acid (K, = 6.0 x 10 ) and 0.500 M in its conjugate base, what is the pH? A 0.194 g sample of...
3. Nitrous acid, HNO2, has a Ka of 7.1x104. A solution that has a concentration of 0.60 M HNO2 has been made. (a) What is the pH of this solution? (b) What is the pH if the original solution contained 0.01 M of KNO2 dissolved?
A chemistry graduate student is given 450. mL of a 0.90 M nitrous acid (HNO2) solution. Nitrous acid is a weak acid with K-4.5x10 . What mass o KNO2 should the student dissolve in the HNO2 solution to turn it into a buffer with pH-3.20? You may assume that the volume of the solution doesn't change when the KNO2 is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.
A buffer solution that is 0.340 M in HNO2 and 0.340 M in KNO2
has a pH of 3.35. The addition of 0.01 mol of to 1.0 L of H3O+ this
buffer would cause the pH to _________ . The capacity of this
buffer for added H3O+ could be increased by the addition of 0.127
mol CHOICES: INCREASE SLIGHTLY,
INCREASE BY 2 UNITS, DECREASE SLIGHTLY, DECREASE BY 2 UNITS, NO
CHANGE.
SECOND CHOICES: OF THE WEAK ACID, OF THE SALT...
6. A0.68 M solution of a weak acid HA is 0.35 % ionized. What are the H, A, and HA concentrations at equilibrium? What is K? 7. The K, for glyoxylic acid, HC HO, is 6.6 x 104. What is the pH of a 0.45 M solution of the acid? What is the % ionization of the acid at this concentration?
Most questions answered within 3 hours.
-
Assume a muscle has a PCSA = 20 cm2 and Lo = 12 cm. Assume it...
asked 1 hour ago -
What is the yield to maturity of a ten-year, $1,000 bond with a
5.2% coupon rate...
asked 2 hours ago -
A mass m = 5 kg is tied on one end of a rope and is...
asked 2 hours ago -
The Average sales price of single-family houses in Charlotte is
$210,000 with a standard deviation of...
asked 2 hours ago -
Target Costing
Laser Impressions, Inc., manufactures color laser printers.
Model J20 presently sells for $225 and...
asked 2 hours ago -
a bottle cap manufacturer with four machines and six operators
wants to see if variation in...
asked 3 hours ago -
State Farm Insurance studies show that in Colorado, 55% of the
auto insurance claims submitted for...
asked 4 hours ago -
Complete the following reactions which form ethers (A
and B) and cyclic ethers (C-E) as major...
asked 4 hours ago -
in a perfectly elastic collision what is the velocity of ball A
if the original direction...
asked 4 hours ago -
PLEASE ANSWER ALL
1) The pressure of the atmosphere decreases with increasing
altitude in the
Choose...
asked 5 hours ago -
A simple random sample of 25,000 individuals are surveyed in
order to determine the prevalence of...
asked 5 hours ago -
People who do very detailed work close up, such as jewelers,
often can see objects clearly...
asked 5 hours ago