Chemical Reactions Lab Report

Laboratory 1 1 —Chemical Reactions 8)

word image 1717

WORDS TO REACTION FORMULAS

Given the description ofa chemical reaction in words, you can write the correct balanced equation with formulas and, furthermore, figure out what chemical is missing if we give you three out of four molecules. For the following reactions, write the complete balanced reaction, include subscripts; abbreviations for solid, liquid, aqueous, or gas; and state the type of reaction.

l. Aqueous copper(ll) nitrate reacts with aqueous sodium hydroxide to form a precipitatc of copper(ll) hydroxide and an unknown liquid.

word image 1719 [ion:

Reaction type: o

82 Laboratory I l

word image 1721

Solid copper(ll) hydroxide converts to solid copper(JI) oxide and unknown liquid when heated.

Eqnation:

Reaction type:

word image 1723 3. Solid copper(ll) oxide reacts with aqueous sulfuric acid to form aqueous copper(f I) word image 1724 sulfate word image 1726 uation:

Reaction type: word image 1729

Copper(ll) sulfate reacts with zinc metal to form copper metal. word image 1730

Equation: word image 1732

Reaction type: word image 1735

  1. Crystalline C 6 H 12 O 6 is burned in oxygen, and carbon dioxide and water are word image 1736 formed. word image 1737

Equation: word image 1738

Reaction type:

  1. Aqueous magnesium bromide and aqueous sodium hydroxide are mixed, and word image 1739 solid magnesium hydroxide is formed.

Equation: word image 1740

Reaction type:

Chemical Reactions 83

WRITING COMPLETE MOLECULAR REACTIONS WITH

SOLUBILITY

Using rhe solubility rules, you may determine if a reaction will OCCUT when two chemicals arc mixed. Use the Solubility Table to determine if each reaction will occur (one of the products must not bc soluble or reaction must form water). Assuming each of the reactants is soluble, write the complete balanced double displacement reaction and indicate if each of the products is solid, liquid, or aqueous. If no reaction will occur because both products are soluble, indicate this fact.

HCI

  1. NaCl + H2S04 —v
  2. Na2C03

KCI

  1. Li2S04 + caci2—.
  2. NaC2HAC)2 +
  3. KOH +

USING SOLUBILITY TO WRITE TOTAL AND NET IONIC

EQUATIONS

All the previous reactions are in the form of molecular equations. Write reactions 2 and 7 in the form of total ionic and net ionic equations. Remember from your Chapter 7 reading that total ionic shows all ions or molecules (and uses the proper number of each and the correct designations C,aC12 is shown as Ca (aq) + 2 Cl(aq)). Net ionic only shows the ions and molecules that participate in any net reaction.

Reaction 2—total ionic

Reaction 2—net ionic

Reaction 7—total ionic

Reaction 7—net ionic

84 Laboratory 1 1

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Laboratory 1 1 —Chemical Reactions 8)

word image 1718

WORDS TO REACTION FORMULAS

Given the description ofa chemical reaction in words, you can write the correct balanced equation with formulas and, furthermore, figure out what chemical is missing if we give you three out of four molecules. For the following reactions, write the complete balanced reaction, include subscripts; abbreviations for solid, liquid, aqueous, or gas; and state the type of reaction.

l. Aqueous copper(ll) nitrate reacts with aqueous sodium hydroxide to form a precipitatc of copper(ll) hydroxide and an unknown liquid.

word image 1720 [ion:

Reaction type: o

82 Laboratory I l

word image 1722

Solid copper(ll) hydroxide converts to solid copper(JI) oxide and unknown liquid when heated.

Eqnation:

Reaction type:

word image 1725 3. Solid copper(ll) oxide reacts with aqueous sulfuric acid to form aqueous copper(f I) word image 1727 sulfate word image 1728 uation:

Reaction type: word image 1731

Copper(ll) sulfate reacts with zinc metal to form copper metal. word image 1733

Equation: word image 1734

Reaction type: word image 1736

  1. Crystalline C 6 H 12 O 6 is burned in oxygen, and carbon dioxide and water are word image 1737 formed. word image 1738

Equation: word image 1739

Reaction type:

  1. Aqueous magnesium bromide and aqueous sodium hydroxide are mixed, and word image 1741 solid magnesium hydroxide is formed.

Equation: word image 1742

Reaction type:

Chemical Reactions 83

WRITING COMPLETE MOLECULAR REACTIONS WITH

SOLUBILITY

Using rhe solubility rules, you may determine if a reaction will OCCUT when two chemicals arc mixed. Use the Solubility Table to determine if each reaction will occur (one of the products must not bc soluble or reaction must form water). Assuming each of the reactants is soluble, write the complete balanced double displacement reaction and indicate if each of the products is solid, liquid, or aqueous. If no reaction will occur because both products are soluble, indicate this fact.

HCI

  1. NaCl + H2S04 —v
  2. Na2C03

KCI

  1. Li2S04 + caci2—.
  2. NaC2HAC)2 +
  3. KOH +

USING SOLUBILITY TO WRITE TOTAL AND NET IONIC

EQUATIONS

All the previous reactions are in the form of molecular equations. Write reactions 2 and 7 in the form of total ionic and net ionic equations. Remember from your Chapter 7 reading that total ionic shows all ions or molecules (and uses the proper number of each and the correct designations C,aC12 is shown as Ca (aq) + 2 Cl(aq)). Net ionic only shows the ions and molecules that participate in any net reaction.

Reaction 2—total ionic

Reaction 2—net ionic

Reaction 7—total ionic

Reaction 7—net ionic

84 Laboratory 1 1

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