ACS Gen Chemistry I Practice Exam - Final Exam

Q: What study guidance does the practice test provide before attempting the questions?

It instructs not to use the practice test as the only study resource, warns that exam questions may differ, and advises understanding why each option is correct or incorrect rather than memorizing answers.

Q: Which constants and equations are included in the exam information box?

Included constants cover pressure, gas constant R, Avogadro constant, and temperature conversion. Key equations listed include PV=nRT and a heat-related equation q=mc₅△T, along with additional fundamental relations.

Q: How are solubility rules applied for ionic compounds in this material?

The rules state that many alkali metal and ammonium ions are soluble, most halides are soluble except specific exceptions (e.g., Ag+ with halides), and sulfide and hydroxide patterns follow stated exceptions. Special cases like S²- with Ca²+, Sr²+, and Ba²+ are noted as soluble, while Group 1 exceptions are highlighted.

Sep 21, 2026

Uploaded by Eden

ACS Gen Chemistry I practice test materials for CHM2045 final exam preparation, including exam-style constants, conversion factors, and core equations for gas laws and thermodynamics. Covers solubility guidelines for ionic compounds, common polyatomic ions, electron and molecular geometry tables, and multiple-choice practice questions on unit conversions, measurement reporting, compound naming and formula writing, and basic nanoparticle mass calculation. Includes study guidance emphasizing understanding concepts rather than memorizing answers.

LanguageEnglish

CategoryExam

FormatPDF

Pages33

Reading Time1 h 23 min

AccessFree to download

ACS Gen Chemistry I Practice Exam

CHM2045 Final Exam Information

Constants and Equations

Solubility Guidelines for Ionic Compounds

Table: Electron and Molecular Geometry

Table: Some Common Polyatomic Ions

Practice Questions (PQ-1 to PQ-12)

ACS Gen Chemistry I Practice Exam Hi Everyone!I have put together this ACS style practice test for you to practice for your finalexam for CHM2045.Disclaimer:Please,DO NOT use this as your only study resource.Yourmain study resources are the ones provided in Webcourses.This is additional practice.DO NOTassume you will get the same questions in your exam.The style will be the same,but thequestions can vary.DO NOT memorize the questions and the answers.The best way to study forACS exams is to thoroughly understand concepts and why each option is right or wrong.Thequestions were taken from the“2018 Preparing for your ACS Examination in General ChemistrySecond Edition The Official Guide”.Good luck! CHM2045 Final Exam Information in this box is provided on the exam | Constants | | | | --- | --- | --- | | Measurements of Pressure | 1 atm=760 mmHg=760 Torr | | | Gas Constants | R=0.0821L·atm·mol-1·K-1 | | | Avogadro Constant | NA=6.022×10²3mol-1 | | | Temperature | 0℃=273.15 K | | | Equations | | | | PV=nRT | | | | | | q=mc₅△T | The following information are not provided and its recommended that you know these. c=λv E=hv # Solubility Guidelines for Ionic Compounds ,Na+,K+,Li+,orandions are soluble.Compounds that containMost halides(Cl-,Br,I⁷)are soluble,except halides of Ag+,,and ion are soluble,except when paired with Ba²+,Sr²+,Ca²+,Pb²+andMost compounds that contain the.Ag+. Most compounds that contain S²-and OH-ions are insoluble (will form a precipitate)except the Group 1compounds,which are soluble. Note:when S²-pairs with Ca²+,Sr²+and Ba²+,the compounds are soluble.Also,Ba(OH)₂,Ca(OH)₂,Sr(OH)₂are slightly soluble. Most compounds that containandions are insoluble(will form a precipitate)except the Group 1and NH₄+compounds,which are soluble. | Table.Electron and Molecular Geometry | | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | | Electron
Groups | Bonding
Groups | Lone
Pairs | Electron
Geometry | Molecular
Geometry | Approximate
Bond Angles | | Example | | | | | | | | | | | 2 | 2 | 0 | Linear | Linear | 180° | :ö=c=ö: | | | 3 | 3 | 0 | Trigonal
planar | Trigonal
planar | 120° | | | | | | | | | | | | | 3 | 2 | 1 | Trigonal
planar | Bent | <120° | | | | | | | | | | | | | 4 | 4 | 0 | Tetrahedral | Tetrahedral | 109.5° | | | | | | | | | | | | | | | | | | | | | | 4 | 3 | 1 | Tetrahedral | Trigonal
pyramidal | <109.5° | | | | 4 | 2 | 2 | Tetrahedral | Bent | <109.5° | | | | 5 | 5 | 0 | Trigonal
bipyramidal | Trigonal
bipyramidal | 120°(equatorial)
90°(axial) | | | | 5 | 4 | 1 | Trigonal
bipyramidal | Seesaw | <120°(equatorial)
<90°(axial) | | | | | | | | | | | | | 5 | 3 | 2 | Trigonal
bipyramidal | T-shaped | <90° | | | | 5 | 2 | 3 | Trigonal
bipyramidal | Linear | 180° | | | | 6 | 6 | 0 | Octahedral | Octahedral | 90° | | | | | | | | | | | | | 6
6 | 5 | 1 | Octahedral | Square
pyramidal | <90° | | | | | | | | | | | | | | 4 | 2 | Octahedral | Square
planar | 90° | | | | | | | | | | | | | | | | | | | | | | Table.Some Common Polyatomic Ions | | | | | | --- | --- | --- | --- | --- | | Name | Formula | | Name | Formula | | acetate | C₂H₃O | | hypochlorite | Clo- | | carbonate | CO₃- | | chlorite | ClOz | | hydrogen carbonate(or bicarbonate) | HCO₃ | | chlorate | ClO₃ | | hydroxide | OH- | | perchlorate | ClO₄ | | nitrate | NO₃ | | permanganate | Mn0 | | nitrite | NO₂ | | Sulfate | SO- | | chromate | CrO2- | | sulfite | SO- | | dichromate | Cr₂0²- | | hydrogen sulfite(or bisulfite) | HSO₃ |

FAQs

What study guidance does the practice test provide before attempting the questions?

It instructs not to use the practice test as the only study resource, warns that exam questions may differ, and advises understanding why each option is correct or incorrect rather than memorizing answers.

Which constants and equations are included in the exam information box?

Included constants cover pressure, gas constant R, Avogadro constant, and temperature conversion. Key equations listed include PV=nRT and a heat-related equation q=mc₅△T, along with additional fundamental relations.

How are solubility rules applied for ionic compounds in this material?

The rules state that many alkali metal and ammonium ions are soluble, most halides are soluble except specific exceptions (e.g., Ag+ with halides), and sulfide and hydroxide patterns follow stated exceptions. Special cases like S²- with Ca²+, Sr²+, and Ba²+ are noted as soluble, while Group 1 exceptions are highlighted.

Sep 21, 2026

Uploaded by Eden

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