Explain what is the ph of the buffer that results

Assignment Help Chemistry

Reference no: EM13541957

What is the pH of the buffer that results when 12.5 g of NaH2PO4 and 22.0 g Na2HPO4 are mixed and diluted with water to 0.500 L? (The acid dissociation constants for phosphoric acid are:

Ka1 = 7.5 * 10^-3

Ka2 = 6.2 *10^-8

Ka3 = 3.6 *10^-13

Reference no: EM13541957

Questions Cloud

Evaluate the speed of the galaxy relative to the earth : Intelligent beings in a distant galaxy send a signal to earth in the form of an electromagnetic wave. What is the speed vrel of the galaxy relative to the earth

Explain n2o2 to effuse under the same conditions : A sample of N2 (g) effuses through a tiny hole in 19.0 s. How long would it take for a sample of N2O2 (g) to effuse under the same conditions

Calculate the length of the wire forming the solenoid : A solenoid 1.63 m long and 2.23 cm in diameter carries a current of 24.9 A. The magnetic field inside the solenoid is 30.7 mT. Find the length of the wire forming the solenoid

Explain what is the partial pressure of oxygen gas : A sample of oxygen gas is collected over water at 23ºC at a barometric pressure of 751 mmHg (the vapor pressure of water at 23C = 21mmHg). What is the partial pressure of oxygen gas in the sample

Explain what is the ph of the buffer that results : What is the pH of the buffer that results when 12.5 g of NaH2PO4 and 22.0 g Na2HPO4 are mixed and diluted with water to 0.500 L. The acid dissociation constants for phosphoric acid are

Find the magnitude of the velocity of the heavier fragment : A 10.0- shell is traveling horizontally to the right at 25.0 relative to the ground when it explodes into two fragments, Find the magnitude of the velocity of the heavier fragment relative to the ground just after the explosion

Explain the solubility product constant for ce(io3)3 : The solubility product constant for Ce(IO3)3 is 3.2x10^-10. What is the Ce3+ concentration in a solution prepared by mixing 50.00mL of 0.0250M Ce3+ with 50.00mL of 0.250M IO3-

Find the length of time the car could run : A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 1.00 m and a mass of 475 kg. find the length of time the car could run before the flywheel would have to be brought back up to speed

Explain hydrazoic acid has a chemical formula of hn3 : Hydrazoic acid has a chemical formula of HN3. It is a volatile and toxic acid with a Ka value of 2.5 X 10^-5. Although it might not be the best choice, a student prepares a buffer using HN3 and NaN3 solutions.

User Account

All Pages