Chem Exam I - CHEM 1311 PRACTICE EXAM II CHAPTERS 4 5 150...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
DATE: ________________ YOUR NAME: _______________________________ (please print) POINT TOTALS: I. Multiple-Choice ___/100 II. Problem- Solving ___/50 Sum = ____/150
Background image of page 1

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

View Full DocumentRight Arrow Icon
Part I. Multiple Choice (100 Points Total) Directions: Circle the letter adjacent the one best response . You are not required to show your work for this portion of the exam. You may write next to the problem, but I will only grade your circled answer. If you circle more than one response per question – then you will lose all credit for that problem. # 01. (5 pts) To which category does the following reaction belong? PbSO 4 (aq) + K 2 O(s) PbO(s) + K 2 SO 4 (aq) a. a gas-forming reaction b. an acid-base reaction c. a precipitation reaction d. an oxidation-reduction reaction e. none of the above # 02. (5 pts) Determine the oxidation number of chromium in H 2 CrO 4 . You may want to may use of the oxidation number table on page 8. a. Cr + b. Cr 2+ c. Cr 3+ d. Cr 4+ e. Cr 6+ # 03. (5 pts) Which one of the following is a weak acid? a. HCl b. HNO 3 c. H 2 SO 4 d. HBr e. Acetic acid (C 2 H 4 O 2 ) # 04. (5 pts) Oxidation-reduction reactions always involve ____________ . a. the transfer of electrons b. an oxidizing agent c. a reducing agent d. a precipitate e. a , b & c CHEM 1311/TAMUCC/J. M. Southard, PhD 2
Background image of page 2
# 05. (5 pts) Balance the acid-base reaction with the smallest whole number coefficients . I’ve placed blanks in front of each compound for your convenience. Choose the answer that is the sum of the coefficients in the balanced equation. Do not forget coefficients of “one”. __ Ca(OH) 2 + __ H 3 PO 4 (aq) __ Ca 3 (PO 4 ) 2 (aq) + __ H 2 O( l ) a. 4 b. 5 c. 8 d. 9 e. 12 # 06. (5 pts) Based on the following balanced equation determine how many moles of O 2 are required to react with 23.5 moles of CH 3 OH? 2 CH 3 OH( l ) + 3 O 2 (g) 2 CO 2 (g) + 4 H 2 O(g) a. 47.0 b. 35.3 c. 11.8 d. 40.0 e. 23.5 # 07. (5 pts) Based on the following balanced equation determine how many moles of H 2 can be produced from 72.9 g Mg and an excess of HCl. 2 HCl(g)
Background image of page 3

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

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This test prep was uploaded on 03/29/2008 for the course CHEM 1311 taught by Professor Southard during the Spring '08 term at Texas A&M University, Corpus Christi.

Page1 / 9

Chem Exam I - CHEM 1311 PRACTICE EXAM II CHAPTERS 4 5 150...

This preview shows document pages 1 - 4. Sign up to view the full document.

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