Exam 2 (Early) - 2010

Exam 2 (Early) - 2010 - CHEM 188 Spring, 2010 Hour Exam 2...

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

View Full Document Right Arrow Icon
Hour Exam 2 (Early) March 10, 2010 Instructions: Your scantron answer sheet must show your NAME , 7-DIGIT KU ID NUMBER , and LAB SECTION . (Begin these entries at the LEFT end of the space provided.) In answering the questions, be careful to fill in the corresponding circles on the answer sheet according to the number of the question on the exam. USE A SOFT (No. 2) PENCIL . Useful information: Henderson-Hasselbalch eqn. [acid] base] [conj. log pK pH a + =  1. In the reaction H 2 CO 3 + H 2 O HCO 3 - + H 3 O + the Brønsted bases are A. H 2 CO 3 and H 2 O B. HCO 3 - and H 2 CO 3 C. H 3 O + and H 2 CO 3 D. H 2 O and H 3 O + . E. H 2 O and HCO 3 - 2. At 25 o C, what would be the concentration of OH - ions in a 0.025 M HCl solution? A. 6.7 x 10 - 14 M B. 4.0 x 10 - 13 M C. 2.0 x 10 - 11 M D. 1.0 x 10 - 7 M E. none of the above 3. What is the pH (to the correct number of significant figures) of a solution in which the hydrogen ion concentration is 5.000 x 10 –6 M? A. 5 B. 5.3 C. 5.30 D. 5.301 E. 5.3010 4. Which answer correctly lists all of the strong acids from the following list? 1. HNO 3 (nitric acid) 2. HF (hydrofluoric acid) 3. H 3 PO 4 (phosphoric acid) 4. H 2 SO 3 (sulfurous acid) 5. HBr (hydrobromic acid) A.
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.

This note was uploaded on 04/14/2010 for the course CHEM 13891 taught by Professor Hierl during the Spring '10 term at Kansas.

Page1 / 4

Exam 2 (Early) - 2010 - CHEM 188 Spring, 2010 Hour Exam 2...

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