Explain what is the ph of the buffer for phosphoric acid

Assignment Help Chemistry

Reference no: EM13240841

A solution is prepared by dissolving 20.0 g of K2HPO4 and 25.0 g of KH2PO4 in enough water to produce 1.0 L of solution. What is the pH of this buffer?
For phosphoric acid (H3PO4), Ka2 = 6.2 10^-8.

A) 7.70
B) 7.42
C) 7.21
D) 7.00
E) 6.72

Reference no: EM13240841

Questions Cloud

What is your decision regarding the null hypothesis : The County Executive for Monroe County is concerned about the response time for the three fire companies in the county. Samples of the response times (in minutes) for each company follow. At the 0.05 significance level is there a difference in the me..

What is the drivers speed : A policeman uses a radar gun to detect the speed of drivers in a 65 mph (29.06 m/s) zone, What is the driver's speed, Is the driver breaking the speed limit

Determine the numerical values of the coefficients : Write out the form of the partial fraction decomposition of the function and determine the numerical values of the coefficients.

Describe the daily life for the citizens of ancient greece : Describe the daily life for the citizens of ancient Greece. Compare demococy is ancient Greece with republican government in the United States.

Explain what is the ph of the buffer for phosphoric acid : A solution is prepared by dissolving 20.0 g of K2HPO4 and 25.0 g of KH2PO4 in enough water to produce 1.0 L of solution. What is the pH of this buffer

Find the volume of balloon : A spherical balloon has the potential to reach a diameter of 35 cm, what would be the volume of this balloon when it reaches a pressure of 0.75P0 and a temperature of -15°C

Accounting procedures allow a business to evaluate their : Accounting procedures allow a business to evaluate their inventory at LIFO (Last In First Out) or FIFO (First In First Out). A manufacturer evaluated its finished goods inventory (in $ thousands) for five products both ways.

The motif of a great flood : The motif of a great flood that covers the entire world is an integral theme in every culture. Cite at least three examples and give details for each story?

The unknown solution might contain any combimation of 3 ions : when that precipitate was treated with NH3 it turned black. Based on this what can you say about the ions that may be present or absent in the solution? Can you reach a conclusion about the presence or absence of each of the three ions based on th..

User Account

All Pages