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CH 17: Calculate the pH of a solution prepared by dissolving 0.150 mol of benzoic acid and 0.300 mol of sodium benzoate in water sufficient to yield 1.00 L of solution. The Ka of benzoic acid is 6.3 x 10-5 SHOW WORK FOR THIS QUESTION

Which substance would be the least soluble in gasoline?

In the electrochemical cell using the redox reaction below, the oxidation half reaction is ________.             Sn4+ (aq) + Fe (s) → Sn2+ (aq) + Fe2+(aq)  

The concentration of iodide ions in a saturated solution of silver iodide is ________ M. The solubility product constant of AgI is 8.3 x 10-17. SHOW WORK FOR THE QUESTION 

A compound decomposes by a first-order process. If 13% of the compound decomposes in 60 minutes, the half-life of the compound is ______ min. SHOW WORK FOR THE QUESTION

The half-life of 131Iodine is 0.220 years. How much of a 500.0 mg sample remains after 24 hours? SHOW WORK FOR THIS QUESTION

What is the pOH of an aqueous solution at 25.0 °C that contains            2.50 × 10-4 M hydronium ion? SHOW WORK FOR THIS QUESTION

The beta decay of cesium-137 has a half-life of 30.0 years. How many years must pass to reduce a 25 mg sample of cesium 137 to 8.7 mg? SHOW WORK FOR THIS QUESTION

What is the total work done in the process shown. image00855503405.gif

A container contains 1 mole of an ideal gas with Cp = 29.1 J/mol K and Cv = 20.8 J/mol K.  How much heat is required to increase the temperatuer by 500K while keeping the pressure constant?