Chapter 1. Diagnostic Quiz 4.2

Introduction

My Slide Activities
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You must read each slide, and complete any questions on the slide, in sequence.

1.

Balance the following equation between calcium and water:

Ca(s) + H2O(l) ? Ca(OH)2(aq) + H2(g)

What is the stoichiometric coefficient for hydrogen gas (H2) when the equation is balanced with smallest whole number coefficients?

A.
B.
C.
D.

Correct.
Incorrect.

2.

Acrylonitrile, C3H3N, is an important substance used to make plastics and can be produced by the reaction of propylene (C3H6), ammonia (NH3) and molecular oxygen (O2) with liquid water as a side product:

NH3(g) + C3H6(g) + O2(g) ? C3H3N(l) + H2O(l)

When correctly balanced, the stoichiometric coefficients for reactants and products, respectively, are:

A.
B.
C.
D.
E.

Correct.
Incorrect.

3.

Give the correct set of coefficients, in order, to balance the following chemical reaction:
P4O6(s) + H2O(l) ? H3PO3(aq)

A.
B.
C.
D.
E.

Correct.
Incorrect.

4.

Which of the following represents the balanced chemical equation for the combustion of pentane, C5H12?

A.
B.
C.
D.
E.

Correct.
Incorrect.

5.

For the following chemical reaction, what is the correct value of x, the coefficient for H2O:
wAl2S3(s) + xH2O(l) -> yAl(OH)3(s) + zH2S(g)

A.
B.
C.
D.
E.

Correct.
Incorrect.

6.

Which of the following represents the balanced chemical equation for the combustion of butane, C4H10?

A.
B.
C.
D.
E.

Correct.
Incorrect.

7.

When the following chemical equation is balanced, what is the sum of the coefficients for all reactants and products?
vFe2(SO4)3(s) + wNH3(g) + xH2O(l) -> yFe(OH)3(s) + z(NH4)2SO4(aq)

A.
B.
C.
D.
E.

Correct.
Incorrect.

8.

How many moles of KClO3 are consumed when 1.5 moles of O2 are produced in the following chemical reaction?
2KClO3(s) -> 2KCl(s) + 3O2(g)

A.
B.
C.
D.
E.

Correct.
Incorrect.

9.

Metallic copper can be produced by the chemical reaction:

Cu2O(s) + CH4(g) ? Cu(s) + H2O(l) + CO2(g) (unbalanced)

How many grams of copper can be produced by reacting 100. g of Cu2O?

A.
B.
C.
D.
E.

Correct.
Incorrect.

10.

Calcium hypochlorite, Ca(OCl)2, is a bleaching agent produced by treating a solution of sodium hydroxide and calcium hydroxide with gaseous chlorine:

NaOH(aq) + Ca(OH)2(aq) + Cl2(g) ? Ca(OCl)2(aq) + NaCl(aq) + H2O(l) (unbalanced)

How many grams of calcium hypochlorite can be produced from 10.0 g of NaOH and excess Ca(OH)2 and chlorine gas?

A.
B.
C.
D.
E.

Correct.
Incorrect.