Reactions

Practice Questions

College Chemistry › Reactions

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1

Determine the oxidation number of each element in the compound $CrCl_{3}$

2

Consider the following unbalanced reaction:

$\text{K}_2\text{SO}_4(aq)+\text{BaCl}_2(aq)\rightarrow \text{KCl}(aq)+\text{BaSO}_4(s)$

How many grams of $\text{BaSO}_4$ can be produced if $15.0\text{mL}$ of $1.20\text{M}\text{ K}_2\text{SO}_4$ is mixed with $25.0\text{mL}$ of $0.75\text{M BaCl}_2$ ?

3

Which type of reaction is shown?

$AgNO_{3} (aq) + NaCl (aq) \rightarrow AgCl (s) + NaNO_{3}(aq)$

4

What type of reaction is shown?

$Ca(s) + F_2(g)\rightarrow CaF_2 (s)$

5

What is the mass in of a gas with a volume of and a density of $0.76: \frac{g}{mL}$ ?

6

Consider the unbalanced equation for the combustion of pentane:

$\text{C}_5\text{H}_{12}(g)+\text{O}_2(g)\rightarrow \text{CO}_2(g)+\text{H}_2\text{O}(g)$

How many grams of $\text{O}_2$ is required to react with exactly of $\text{C}_5\text{H}_{12}$ .

7

Consider the unbalanced equation for the combustion of pentane:

$\text{C}_5\text{H}_{12}(g)+\text{O}_2(g)\rightarrow \text{CO}_2(g)+\text{H}_2\text{O}(g)$

How many grams of $\text{O}_2$ is required to react with exactly of $\text{C}_5\text{H}_{12}$ .

8

What type of reaction is shown?

$Ca(s) + F_2(g)\rightarrow CaF_2 (s)$

9

Consider the following equation at equilibrium:

$4\text{NH}_3(g)+5\text{O}_2(g)\rightleftharpoons4\text{NO}(g)+6\text{H}_2\text{O}(g)$

What would happen if more $\text{NO}$ were added to the system?

10

Identify the Bronsted-Lowry acid in the following equation:

$\text{H}_2\text{O}+\text{C}_3\text{H}_6\text{O}^-\rightarrow\text{OH}^-+\text{C}_3\text{H}_7\text{O}$

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