Chemistry Practice Exam 2

Chemistry Practice Exam 2 - Name: _ Class: _ Date: _ ID: A...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Name: ________________________ Class: ___________________ Date: __________ ID: A 1 Chem 1 Exam 2 Fa06 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. Methane reacts with oxygen to form carbon dioxide and water. CH 4 (g) + 2 O 2 (g) CO 2 (g) + 2 H 2 O(g) All of the following statements concerning this reaction are correct EXCEPT a. two moles of water are formed per one mole of methane consumed. b. two molecules of oxygen are consumed per one mole of methane consumed. c. the combined mass of reactants consumed equals the mass of products formed. d. two grams of oxygen are consumed per each gram of carbon dioxide formed. e. three moles of gases are formed per each three moles of gases consumed. ____ 2. Sulfur dioxide may be prepared by the reaction of sulfur with oxygen gas according to the chemical equation below. __ S 8 (s) + __ O 2 (g) __ SO 2 (g) What are the respective coefficients when the equation is balanced with the smallest whole numbers? a. 8, 8, 8 b. 2, 16, 8 c. 1, 8, 8 d. 2, 16, 16 e. 1, 2, 1 ____ 3. Metals react with oxygen to give oxides with the general formula M x O y . Write a balanced chemical equation for the reaction of cobalt with oxygen to yield cobalt (III) oxide. a. Co(s) + O 2 (g) Co 2 O 3 (s) b. 4 Co(s) + 3 O 2 (g) 2 Co 2 O 3 (s) c. 2 Co(s) + 3 O 2 (g) Co 2 O 3 (s) d. 6 Co(s) + O 2 (g) 2 Co 3 O(s) e. 2 Co(s) + 3 O 2 (g) 2 CoO 3 (s) ____ 4. The balanced equation for the complete combustion of benzene, C 6 H 6 , is a. C 6 H 6 ( ) + 12 H 2 O 6 CO 2 (g) + 15 H 2 (g) b. C 6 H 6 ( ) 6 C(s) + 3 H 2 (g) c. 2 C 6 H 6 ( ) + 9 O 2 (g) 12 CO (g) + 6 H 2 O(g) d. C 6 H 6 ( ) + O 2 (g) CO 2 (g) + H 2 O(g) e. 2 C 6 H 6 ( ) + 15 O 2 (g) 12 CO 2 (g) + 6 H 2 O(g)
Background image of page 1

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

View Full DocumentRight Arrow Icon
Name: ________________________ ID: A 2 ____ 5. Aluminum reacts with oxygen to produce aluminum oxide. 4 Al(s) + 3 O
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 06/14/2008 for the course UG 07110_02 taught by Professor Nafar during the Summer '08 term at Logan University.

Page1 / 7

Chemistry Practice Exam 2 - Name: _ Class: _ Date: _ ID: A...

This preview shows document pages 1 - 3. Sign up to view the full document.

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