Compute the ka value for the unknown acid

Assignment Help Chemistry
Reference no: EM13259658

A solution of 0.0041 M of an unknown acid has a pH of 3.195. Calculate the Ka value for the unknown acid, HA.

This was my exam question and I got it wrong. My answer : 1.31*10^-2

Reference no: EM13259658

Questions Cloud

Knowledge of accounting concepts and terminology : Why is a knowledge of accounting concepts and terminology useful to anyone in a business activity? Is there a difference between bookkeeping and accounting? Discuss.
Explain what is the ph of a solution created by mixing : What is the pH of a solution created by mixing 368.0 mL of 0.175 M Hydrochloric Acid, HCl, with 231.0 mL of 0.318 M Sodium Hydroxide, NaOH?
Determine the output of the generator in watts : A small gasoline engine can put out 18,000 N-m/min of mechanical power. The engine is used to drive an electrical generator that is 80 percent efficient. 1 N-m = 2.78 X 10-4 W-h. Find the output of the generator in Watts.
What is the value of the current density : The quantity of charge q (in coulombs) that has passed through a surface of area 1.90 cm2 varies with time according to the equation q = 8t3 + 8t + 6, What is the value of the current density
Compute the ka value for the unknown acid : A solution of 0.0041 M of an unknown acid has a pH of 3.195. Calculate the Ka value for the unknown acid, HA.
Ddesign a program that calculates the total amount : Ddesign a program that calculates the total amount of a meal amount of a meal purchased at a restaurant. The program should ask the user to enter the charge for the food
Which is not the conditions met for revenue : Which of the following is not one of the four conditions that normally must be met for revenue to be recognized according tothe revenue principle for accrual basis accounting?
How much time will torque take to rotate : A torque of 18 N-m is applied to a rotating part. The moment of inertia is 0.078 kg-m2. How much time (in seconds) will it take to rotate the part 180°?
Compute the time required for the system to reach : A certain substance, intially present at 0.950 M, decomposes by first-order kinetics with a rate constant of 1.25 x10-2 mol m-1 s-1. calculate the time (in seconds) required for the system to reach a concentration of 0.431M

Reviews

Write a Review

Chemistry Questions & Answers

  What is mole relationship between the lead nitrate and zinc

In an experiment 1.65g of lead(ii) nitrate react with .327g of zinc. What is the mole relationship between the lead nitrate and the zinc.

  Explain what is the importance of the pi

What is the importance of the pI (isoelectric point) of an amino acid, when considering ion exchange chromatography

  What is the minimum mass of nahco3 that must be added

If 28mL of 5.2M H2SO4 was spilled, what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid?.

  Compute the concentration of calcium ion

calculate the concentration of calcium ion (in mg/L -1) in the water (25C). What assumptions are made in carrying out the calculation?

  What volumen of base will it take to reach equivalence point

A 36.3 ml aliquot of 0.0529 M H2SO4 (aq) is to titrated with 0.0411 M NaOH (aq) What volumen (ml) of base will it take to reach the equivalence point

  Calculate the bod

Consider a small lake, 0.4 mile across and 11 ft deep, that contains a total of 50 tons of dissolved oxygen. Calculate the BOD (i.e. calculate the amount of oxygen required to degrade the amount of organic waste given)

  What time (minutes) would be required

What length of time (minutes) would be required to plate 12.25 g of nickel from a NiCl2(aq) solution?

  Find out the number of unpaired electrons

Predict the magnetic susceptibilities (para- or diamagnetic) and determine the number of unpaired electrons of each of the following complexes (consider C2O42- and H2O as strong field ligands which cause a large splitting of the d-orbitals).

  What is the mass of a cube of lead

The mass of a cube of iron is 363 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions?

  State and find the unknown concentrations naoh hcl

You use 32.0 mL of NaOH to titrate 100. mL of HCl and 22.2 mL of NaOH to titrate 50.0 mL of 0.0836 M H2SO4. Find the unknown concentrations. NaOH HCl

  Explain p-acetaminobenzensulfonic chloride reacts with water

Provide the reaction mechanism when p-acetaminobenzensulfonic chloride reacts with water

  Explain how many moles of solid product can be formed

Use the stoichimetery of the equation and the dilute titanium 4 chloride solution for the following: How many moles of solid product can be formed?

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