Compute the percent ionized a dilute solution

Assignment Help Chemistry
Reference no: EM13191915

1) When 0.0044 moles of a weak acid are dissolved in enough water to make 0.500 L, the pH of the resulting solution is 5.01. Calculate Ka.

2) Phenol (C6H5OH, also called carbolic acid) has a pKa of 9.89. It is used to preserve body tissues and is quite toxic. Calculate the percent ionized in 0.0399 M phenol--a dilute solution.

3) Calculate the percent ionized in 2.63x10-6 M phenol--a very dilute solution.

Reference no: EM13191915

Questions Cloud

Find the direction and magnitude of the resultant : Three forces with magnitudes of 70 pounds, 40 pounds, and 60 pounds act on an object at angles of -30 degrees, 45 degrees, and 135 degrees, respectively, with the positive x-axis. Find the direction and magnitude of the resultant of these forces.
What is the worst her score cna possibly be : What is the probability that na applicatnt's score is above 215?
Inspecting work systems-delegation of work : Planning includes all of the following except- inspecting work systems, delegation of work, conducting studies,analyzing data
How long should a guy wire be : a radio transmission tower is 200 feet tall. How long should a guy wire be if it is to be attached 14 feet from the top and is to make an angle of 23 degrees with the ground?
Compute the percent ionized a dilute solution : Phenol (C6H5OH, also called carbolic acid) has a pKa of 9.89. It is used to preserve body tissues and is quite toxic. Calculate the percent ionized in 0.0399 M phenol--a dilute solution.
Determine the average velocity of weather balloon : a weather balloon is rising vertically. after T hours, its distance above the ground measured in kilometers is given by the formula s(t)=8t-t2. determine the average velocity of weather balloon from t=2h to t=5h. determine its velocity at t=3h.
How many defective computers would you expect : out of 300 computers, 22 are defective. how many defective computers would you expect in a group of 30,000.
Define treatment of equilibrium to determine the ph : Use the systematic treatment of equilibrium to determine the pH and concentrations of species in 1.00 L of solution containing 0.070 mol lysine (HL), 0.055 mol aspartic acid (H2A), and 0.0080 mol NaOH. Consider just acid-base chemistry.
What was the rate charged per hour by each mechanic : Two mechanics worked on a car. The first mechanic worked for 15 hours, and the second mechanic worked for 5 hours. Together they charged a total of 2100 . What was the rate charged per hour by each mechanic if the sum of the two rates was 190 per ..

Reviews

Write a Review

Chemistry Questions & Answers

  How many moles of stem are produced

How many moles of stem are produced at 2.00 atm and 202.0 celcius by the complete combustion of 12.50 L of methane gas?

  Define how many independent linear combinations are possible

How many independent linear combinations are possible for four 1s orbitals? (b) Draw pictures of the linear combinations of H1s orbitals for a hypothetical linear H4 molecule

  How much energy (in calories) is needed

How much energy (in calories) is needed to heat 17cm^3 of fat from room temperature (25 C) to its melting point (35 C)?

  Define solution at boiling water temperature

what is the color of cocl2 (aq) solution at boiling water temperature? And in which direction did the equilibrium shift upon

  How many grams of iron could be produced

Iron can be prepared by the reaction of Fe2O3 with carbon according to the equation: 2Fe2O3(s) + 3C(s) 3CO2(g) + 4Fe(s) If 401 g Fe2O3 and 205 g C are heated together, how many grams of iron could be produced?

  Compute the mean molecular weight

Calculate the mean molecular weight (kg/kmol) of the fuel c) Evaluate the air-fuel ratio on a mass basis.

  Three-quarter-equivalence points and the equivalence point

Calculate what the pH is at 0 mL added strong acid, the quarter-, half-, and three-quarter-equivalence points, the equivalence point, and when excess acid has been added.

  How much energy in calories was absorbed

A canister is filled with 380g of ice and 100. g of liquid water, both at 0 C. The canister is placed in an oven until all the H2O has boiled off and the canister is empty. How much energy in calories was absorbed?

  What is the new pressure

the pressure of a sample of helium in a 1.00-liter container is .988 atm. What is the new pressure if the sample is placed in a 2.00 L container?

  What will the pressure be

a gas cylinder contains 40.0 L of gas at 45.0C and has a pressure of 650. torr. What will the pressure be if the temperature is changed to 100C?

  What is the new pressure of the gas in pa

A 739 mL gas sample at STP is compressed to a volume of 244 mL, and the temperature is increased to 24 ? C. What is the new pressure of the gas in Pa? Answer in units of Pa.

  Explain a hydrated form of copper sulfate

A hydrated form of copper sulfate (CuSO4·x H2O) is heated to drive off all the water. If we start with 9.47 g of hydrated salt and have 5.29 g of anhydrous CuSO4

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd