🏷️ LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION →

HomeClass Notes1,200,000US530,000

CHEM 18b Lecture Notes - Lecture 1: Buffer Solution, Limiting Reagent, Silver Bromide

55 views2 pages

viridiancrow586

25 Apr 2017

School

Brandeis University

Department

Course

Professor

Deirdra Evers- Mc Gregor

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

Precipitation reaction- combination of two aqueous ionic solutions that produce a solid (the precipitate) Qualitative analysis vs. quantitative analysis - observations are extremely important. A precipitate is formed with qualitative analysis (without numbers) Binary mixtures: naoh, nh4, bacl2, mgso4, kio3, agno3, na2co3, hno3 n x (n-1)/2 n=8, 28 possible combinations. 4 solutions with cations: co2+, cu2+, fe3+, ni2+ Identify the same solutions except they will be unknowns. Also identify metal cations in an unknown mixture using selective separation. To do selective separation use specific reagents to precipitate components out one at a time. Coordination (complex) compound - neutral compound with central metal in surrounded by ligands and combined with counterions. Ligand - lewis base (an electron donor) that forms a bond with metal. Goal is the synthesis to 2 coordination compounds containing co3+, nh3, cl- Both have cobalt in middle with 6 things bonded to it. First case has 6 nh3 making complex ion you have 3 cl- counterions.

Related textbook solutions

Chemistry: Structure and Properties

ISBN: 9780134293936

Basic Chemistry

ISBN: 9780134138046

Principles of Chemistry Molecular Approach

ISBN: 9780134112831

Principles of Chemistry Molecular Approach

3rd Edition, 2014

ISBN: 9780321971944

Chemistry: Structure and Properties

ISBN: 9780134293936

Chemistry: A Molecular Approach

ISBN: 9780321809247

Chemistry: A Molecular Approach

ISBN: 9780134874371

Principles of Chemistry: A Molecular Approach

ISBN: 9780134895741

Chemistry: The Central Science

14th Edition, 2017

ISBN: 9780134414232

Related Documents

CHEM 18B- Midterm Exam Guide - Comprehensive Notes for the exam ( 32 pages long!)

viridiancrow586

CHEM 115 Chapter Notes - Chapter 4: Fluorine, Sodium Hydroxide, Sodium Chloride

ultramarinebat612

CHEM 121 Chapter Notes - Chapter 7: Noble Gas, Oxidation State, Oxidizing Agent

aquamarineox534

Related Questions

Which of the following is a gas-evolution reaction? 2 C2H6(I) +- 7 O2(g) rightarrow 4 CO2(g) + 6 H2O(g) LiCI(aq) + NaNO3(aq) rightarrow LiNO3(aq) + NaCI(g) 2 H2(g) + O2(g) rightarrow 2 H2O(g) NH4CI(aq) + KOH(aq) rightarrow KCI(aq) + NH3(g) + H2O(l) None of the above are gas-evolution reactions. Which of the following is an acid base reaction? C(s) + O2(g) rightarrow CO2(g) Fe(s) + 2 AgNO3(aq) rightarrow 2 Ag(s) + Fe(NO3)2(aq) 2 HCIO4(aq) + Ca(OH)2(aq) rightarrow 2 H2O(l) + Ca(CIO4)2(aq) OMgSO4(aq) + Ba(NO3)2(aq) - Mg(N03)2(aq) + BaS04(s) None of the above are acid base reactions. Identify the spectator ions in the following molecular equal KBr(aq) + AgNO3(aq) rightarrow AgBr(s) + KNO3(aq) Ag+ and NO3 k+ and NO3- k+ and Br+ Ag+ and Br+ There are no spectator ions in this reaction. Which of the following is a precipitation reaction? HCI(aq) + KOH(aq) rightarrow KCI(aq) + H2O(l) NaCI(aq) + Lil(aq) rightarrow Nal(aq) + LiCI(aq) 2 Lil(aq) + Hg2(NO3)2(aq) rightarrow Hg2l2(s) + 2 LiN03(aq) 2n(s) + 2 AgNO3(aq) rightarrow 2 Ag(s) + Zn(NO3)2(aq) None of the above are precipitation reactions. Give the net ionic equation for the reaction (if any) that occurs when aqueous solutions of H2SO4 and KOH are mixed. H+(aq) + OH-(aq) rightarrow H2O(l) H+(aq) + OH-(aq) + 2 K4(aq) + SO42'(aq) rightarrow H2O(l) + K2SO4(s) H22+(aq) + OH - (aq) rightarrow H2(OH)2(l) 2 K+(aq) + SO42 - rightarrow (aq) K2SO4(s) No reaction occurs. Give the net ionic equation for the reaction (if any) that occurs when aqueous solutions of K2S and Fe(NO3)2 are mixed. Fe2+(aq) + S2-(aq) + 2 K4(aq) + 2 NO3(aq) righarrow FeS(s) + 2 K4(aq) + 2 NO3(aq) Fe2+(aq) + S2 - (aq) + 2 K4(aq) + 2 NO3 - (aq) rightarrow Fe2+(aq) + S2-(aq) + 2 KNO3(s) Fe2+(aq) + S2 - (aq) rightarrow FeS(s) K+(aq) + NO3 - (aq) rightarrow KNO3(s) No reaction occurs. Choose the statement below that is TRUE. The term "weak electrolyte" means that the substance is inert. A strong acid solution consists of only partially ionized acid molecules. A molecular compound that does not ionize in solution is considered a strong electrolyte. A weak acid solution consists of mostly nonionized acid molecules. The term "strong electrolyte" means that the substance is extremely reactive. What is the molarity of a NaOH solution if 48.0 mL of a 0.220 M H2S04 solution is required to neutralize a 25.0-mL sample of the NaOH solution? 00.115 00.845 00.422 00.229 0132 What element is undergoing reduction (if any) in the following reaction? Zn(s) + 2 AgN03(aq) rightarrow Zn(NO3)2(aq) + 2 Ag(s) O Ag Zn N This is not an oxidation-reduction reaction.

Show transcribed image text Which of the following is a gas-evolution reaction? 2 C2H6(I) +- 7 O2(g) rightarrow 4 CO2(g) + 6 H2O(g) LiCI(aq) + NaNO3(aq) rightarrow LiNO3(aq) + NaCI(g) 2 H2(g) + O2(g) rightarrow 2 H2O(g) NH4CI(aq) + KOH(aq) rightarrow KCI(aq) + NH3(g) + H2O(l) None of the above are gas-evolution reactions. Which of the following is an acid base reaction? C(s) + O2(g) rightarrow CO2(g) Fe(s) + 2 AgNO3(aq) rightarrow 2 Ag(s) + Fe(NO3)2(aq) 2 HCIO4(aq) + Ca(OH)2(aq) rightarrow 2 H2O(l) + Ca(CIO4)2(aq) OMgSO4(aq) + Ba(NO3)2(aq) - Mg(N03)2(aq) + BaS04(s) None of the above are acid base reactions. Identify the spectator ions in the following molecular equal KBr(aq) + AgNO3(aq) rightarrow AgBr(s) + KNO3(aq) Ag+ and NO3 k+ and NO3- k+ and Br+ Ag+ and Br+ There are no spectator ions in this reaction. Which of the following is a precipitation reaction? HCI(aq) + KOH(aq) rightarrow KCI(aq) + H2O(l) NaCI(aq) + Lil(aq) rightarrow Nal(aq) + LiCI(aq) 2 Lil(aq) + Hg2(NO3)2(aq) rightarrow Hg2l2(s) + 2 LiN03(aq) 2n(s) + 2 AgNO3(aq) rightarrow 2 Ag(s) + Zn(NO3)2(aq) None of the above are precipitation reactions. Give the net ionic equation for the reaction (if any) that occurs when aqueous solutions of H2SO4 and KOH are mixed. H+(aq) + OH-(aq) rightarrow H2O(l) H+(aq) + OH-(aq) + 2 K4(aq) + SO42'(aq) rightarrow H2O(l) + K2SO4(s) H22+(aq) + OH - (aq) rightarrow H2(OH)2(l) 2 K+(aq) + SO42 - rightarrow (aq) K2SO4(s) No reaction occurs. Give the net ionic equation for the reaction (if any) that occurs when aqueous solutions of K2S and Fe(NO3)2 are mixed. Fe2+(aq) + S2-(aq) + 2 K4(aq) + 2 NO3(aq) righarrow FeS(s) + 2 K4(aq) + 2 NO3(aq) Fe2+(aq) + S2 - (aq) + 2 K4(aq) + 2 NO3 - (aq) rightarrow Fe2+(aq) + S2-(aq) + 2 KNO3(s) Fe2+(aq) + S2 - (aq) rightarrow FeS(s) K+(aq) + NO3 - (aq) rightarrow KNO3(s) No reaction occurs. Choose the statement below that is TRUE. The term "weak electrolyte" means that the substance is inert. A strong acid solution consists of only partially ionized acid molecules. A molecular compound that does not ionize in solution is considered a strong electrolyte. A weak acid solution consists of mostly nonionized acid molecules. The term "strong electrolyte" means that the substance is extremely reactive. What is the molarity of a NaOH solution if 48.0 mL of a 0.220 M H2S04 solution is required to neutralize a 25.0-mL sample of the NaOH solution? 00.115 00.845 00.422 00.229 0132 What element is undergoing reduction (if any) in the following reaction? Zn(s) + 2 AgN03(aq) rightarrow Zn(NO3)2(aq) + 2 Ag(s) O Ag Zn N This is not an oxidation-reduction reaction.