Evaluate the fraction of the total chromate

Assignment Help Chemistry
Reference no: EM13294722

Chromic acid is a diprotic acid H2CrO4 with Ka1 = 0.18 and Ka2 = 3.2 x 10-7. A solution of potassium chromate is prepared at pH 7.72. Calculate the fraction of the total chromate in this solution that is present as the chromate ion CrO42-.

Reference no: EM13294722

Questions Cloud

What is the phase difference in a circuit with 100v : What is the phase difference in a circuit with 100V,drawing 0.5 amps, consuming 50 Watts
Internet and locate a long-range investment plan : Calculate the future value of the investment. You must use the advertised interest rate, the number of compounding periods per year, and the time the funds will be invested.
Calculate the power transferred across the air gap : Rotational and stray-lossesat full load are 5% of the output power. Calculate the power transferred across the air gap, the rotor copper loss at full load,and the electromagnetic torque at full nload innewton-meters.
Explain acidic to be extracted into aqueous sodium hydroxide : Carboxylic acids and phenols can be separated by chemically active extraction if the pH of the aqueous layer is properly chosen. Phenols are sufficiently acidic to be extracted into aqueous sodium hydroxide
Evaluate the fraction of the total chromate : A solution of potassium chromate is prepared at pH 7.72. Calculate the fraction of the total chromate in this solution that is present as the chromate ion CrO42-.
Use the rounded numbers in intermediate calculations : Solve for the unknown number of years in each of the following (Enter rounded answers as directed, but do not use the rounded numbers in intermediate calculations. Round your answers to 2 decimal places (e.g., 32.16)).
What type of magnetic pole is the top pole face : The force on a long wire is a maximum of 6.20 10-2 N when placed between the pole faces of a magnet. What type of magnetic pole is the top pole face
Explain the ratio of co2 to co in the exhaust gas : A mixture of 65 mol% methane, 30 mol% hydrogen, and 5 mol% nitrogen is burned to heat a boiler used to produce hot steam. The ratio of CO2 to CO in the exhaust gas is 10:1.
Use the rounded numbers in intermediate calculations : Solve for the unknown number of years in each of the following (Enter rounded answers as directed, but do not use the rounded numbers in intermediate calculations. Round your answers to 2 decimal places (e.g., 32.16)).

Reviews

Write a Review

Chemistry Questions & Answers

  How many joules of energy are necessary to heat the steam

A sample of h20 with a mass of 46.0 grams has a temperature of -58 degrees celcius. how many joules of energy are necessary to heat the steam from 100 degrees celsius to 114 degrees celcius.

  Explain unknown concentration of a weak acid

We titrated a 0.1033 M NaOH solution into an unknown concentration of a weak acid (25.00 mL). It also says the unknown acid will have a concentration of about 0.1 M.

  How to calculated mass percent recovery of cu

what would be the effect on your calculated mass percent recovery of Cu if you did not completely react the Mg in the reaction mixture? Briefly explain.

  State what is the mole fraction of no knowing

If a cylinder of NO has a volume of 20.00L and a pressure of 26.98 atm at 20 degrees Celcius, what is the mole fraction of NO knowing that there are 21.55moles of Nitrogen?

  What is the concentration of hydroxide ions

At 25 c the ion product of water, Kw is 1.9 x 10^-14. What is the concentration of hydroxide ions in a solution where the concentration of hydrogen is found to be 5.0 x 10^-15 mol dm^-3.

  Explain the atmospheric oxidation of nitrogen monoxide

The atmospheric oxidation of nitrogen monoxide, 2 NO(g) +O2(g) 2NO2(g), was studied at some temperature withinitial pressures of 1.000 atm of NO and 1.000 atm ofO2. A tequilibrium PO2=.506 atm calculate Kp 2NO(g)+O2(g) 2NO2(g)

  Which ingredients provide energy

In what ways might the one(s) that does (do) not have a metabolic energy source (caffeine) provide the perception of increased energy after consumption?

  Evaluate the activation energy for the reaction

The rate constant (k) for a reaction was measured as a function of temperature. a plot of ln k versus 1/T is line and has a slope of -7445K. Calculate the activation energy for the reaction

  How many moles of sodium ions are found

Aqueous solutions of sodium thiosulfate, Na2SO3, are used as an antidote to some snakebites. How many moles of sodium ions are found in 10.0 mL of a 0.15 M solution of Na2S2O3?

  What is the equilibrium constant for the following reaction

The equilibrium constant for the reaction of bromine with chlorine to form bromine monochloride is 58.0 at a certain temperature.

  What is the concentration of fructose

If you make three serial 1:5 dilutions, using the solution above, what is the concentration of the final solution?

  Explain emission line in the hydrogen spectrum appears

An emission line in the hydrogen spectrum appears in the infrared region at 956 nm. What transition produced this line? Clearly indicate both nf and ni.

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