q3ps11and key combined - CH302 Spring 2011 Practice Quiz...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
1. Which of the following pairs of solutions would result in a buffer upon mixing? 2 2 SO 4 3. 100 mL of 1 M NH 3 3 4. 150 mL of 3 M Ba(OH) 2 & 200 mL of 2 M HClO 5. 100 mL of 1 M CH 3 COOH & 50 mL of 1 M NaOH 2. What would be the pH of a solution prepared from 2 L of H 2 O, 85 g of NH 3 and 98 g of NH 4 Br? Assume the K b of ammonia is 2x10 -5 . 1. 4 2. 5.4 3. 10 4. 8.6 5. 7 3. Two liters of a buffer containing 0.6 M CH 3 NH 2 and 0.8 M CH 3 NH 3 Cl has 102.4 g of HI added to it. What is the new pH? Assume the K b of CH 3 NH 3 is 6x10 -4 . 1. 6 2. 3 3. 11 4. 4 5. 10 6. 8 4. 100 ml of a 0.08 M CH 3 CH 2 NH 3 Cl solution is titrated against a 0.08 M RbOH solution. Assuming the K b of CH 3 CH 2 NH 2 is 1x10 -10 , what is the pH when the total volume of the solution is 150 ml? (There is a short cut way to answer this question.) 1. 3 2. 7 3. 10 4. 4 5. not enough information 5. A 0.08 M CH 3 NH 2 solution is titrated against a 0.08 M HCl solution. Assuming the K b of CH 3 NH 2 is 4x10 -10 , what is the pH at the equivalence point? 1. 3 2. 7 3. 9 4. 5 5. not enough information 6. If 100 ml of 0.2 M HClO 3 is titrated to a pH of 7 with 0.4 M LiOH, what is the overall volume of the solution at the endpoint? 1. 50 ml 2. 150 ml 3. 1.5 4. Not enough information is provided 7. A student erroneously calculated that a solution consisting solely of a weak base dissolved in water had a pH of 6. Which two of the following might have been true? I. K
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

q3ps11and key combined - CH302 Spring 2011 Practice Quiz...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online