Compute the pka value of the acid and determine moles

Reference no: EM13207731

Strong base is dissolved in 745 mL of 0.400 M weak acid (Ka= 3.75 x 10^-5) to make a buffer with a pH of 4.08. Assume that the volume stays constant when the base is added.

a) calculate the pKa value of the acid and determine the number of moles of acid initially present.

b) when the reaction is complete, what is the concentration ratio of conjugate base to acid?

c) How many moles of strong base were initially added?

Reference no: EM13207731

Questions Cloud

Globalization of financial and stock markets : Explain several important events or changes that contributed to the globalization of financial and stock markets and how have these changes affected thecapital structureof MNCs

Compute the entropy of the ordered coins : Consider the change in entropy change that occurs when a box of coins that contains a perfectly ordered array of three moles of coins is shaken. Calculate the entropy of the ordered coins, and then calculate the entropy after the box has been shak..

Describe the impact on excess quantity of labor supplied : Craft Unions Both industrial and craft unions attempt to raise their members' wages, but each goes about it differently. Explain the difference in approaches and describe the impact these differences have on excess quantity of labor supplied.

How is nitrate related to tn and tkn : Show that the drinking water standard of 10 mg/L nitrate as nitrogen is equivalent to 45 mg/L nitrate. How is nitrate related to TN and TKN?

Compute the pka value of the acid and determine moles : calculate the pKa value of the acid and determine the number of moles of acid initially present.b) when the reaction is complete, what is the concentration ratio of conjugate base to acid?

Find the temperature stress produced : A rod of steel is 20 m long at a temperature of 200C. find the free expansion of the rod when the temperature is raised to 650C. Find the temperature stress produced

Explain the impact of credit rating on cost of capital : Clearly discuss the weaknesses in the CFO's position. Under what circumstances will the CFO's proposal for capital expenditure financing result in an unfavorable capital project outcome? Suggest other sources of financing.

How much will christpher have at his retirement. : Matt Christpher is a 25 year old mechanical engineering and his salary next year will be $60,000.Matt expects that his salary will increase at a steady rate of 5%per year until his retirement at age 65.if he saves 10% of his salary each year

What criteria should zachary use evaluate the project : what criteria should Zachary use evaluate the project ?

User Account

All Pages