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Chemistry 231 Exam with Questions and Answers 2 kinds if materials ANSWER Organic and inorganic Organic ANSWER Compounds derived from living organisms, believed to contain an unmeasurable vital force the essence of life Inorganic ANSWER Compounds derived from minerals- those lacking that vi...

Chem 231 Exam 2 with Questions and Answers molarity ANSWER = moles of solute / liter of solution ex. NaCl dissolved in water solute = NaCl solution: salt water molality ANSWER = moles of solute / kg of solvent ex. NaCl dissolved in water solute: NaCl solvent: water Sig Fig - Addi...

Chem 231 Midterm Study Guide (OSU) with Questions and Answers how much heat is released when x mol of y is combusted ANSWER mol → kJ. if heat is being released- exothermic (answer is negative) if heat is being absorbed-endothermic (answer is positive) how much heat is released when x ...

CHEM 231 EXAM 3 with Questions and Answers glycols ANSWER a diol with OH groups on adjacent carbons polar ANSWER are alcohols polar or non-polar? H-bonding ANSWER what increases the BP of alcohols compared to similar sized alkanes? higher ANSWER is the bp of alcohols lower or higher than...

CHEM 231 Exam 1 Guide with Questions and Answers what do you have to do to alcohols before they can react with other things? ANSWER you must activate them what are the ways you can activate alcohols so they convert to alkyl halides? ANSWER protonation, or using PCl3,PBr3, SOCl2, or TsCl on pyr...

Chem 231 Midterm Quiz with Complete Solutions What is the Pauli Exclusion Principal? ANSWER no two electrons in an atom can have the same four quantum numbers What is Hund's rule? ANSWER every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupi...

CHEM 231 Lab Final Exam with Questions and Answers When doing a mixed melting point determination why is it important to carefully mixed together the unknown sample with the known sample? ANSWER It is important to mix the unknown sample with the known sample because we can tell if the mixture is ...

CHEM 231 Midterm 1 Test with Questions and Answers states of matter ANSWER gas, liquid, solid, plasma physical change ANSWER nothing changes at atomic level chemical change ANSWER changes at the atomic level (making and breaking bonds) homogenous mixture ANSWER sugar and water- you can...

ISU CHEM 231 Exam 1 with Questions and Answers Alkanes ANSWER All sigma bonds, pKa=50 Alkenes ANSWER Double bond, pKa=44 Alkyne ANSWER Triple bond, pKa=25 Equilibrium will favor side of ANSWER Weaker acid sp3 ANSWER NO pi bonds, all sigma bonds, Tetrahedral 109.5 sp2 ANSWER Any ato...

Chem 231 Lab Final Solvent Extraction Exam with Questions and Answers What is the purpose of the solvent extraction in this experiment? ANSWER To separate a mixture containing an acidic, basic, and neutral compound by liquid-liquid solvent extraction. What is the purpose of the TLC analysis in...

Chemistry 231 Exam 1 Review with Complete Solutions How are resonance structures ranked in order of importance? ANSWER 1. All atoms have complete octets 2. Smallest formal charges on atoms (least separation of charge) 3. Fewest number of adjacent formal charges 4. Structure in which the negati...