Homework Help for Chemistry

Consider rhe following REDOX reaction:

a) Write the oxidation and reduction half-cell treactions.

b) Sketch the cell, label the anode and cathode and thedirection in which the electrons are flowing.

c) Show this reaction in shorthand notation.

Compound A has a parent peak of M+ = 95 m/z in its mass spectrumand shows a medium intensity sharp infrared absorption band at 2280cm. The HNMR of compound A shows 3 signals in a 4:4:1 ratio.Treatment of compound A with hot aqueous acid generates compound B(M+= 113 m/z) can be transformed back to A by using SoCl2. Finallycompound B can be transformed with lithium aluminum hydride (ether)then aqueous acid to compound C (M+ = 99 m/z). Identify thecompound A, B and C. State your reasoning,

I can identify the compound I need help with reasoning.

Compound A has a parent peak of M+ = 95 m/z in its mass spectrumand shows a medium intensity sharp infrared absorption band at 2280cm. The HNMR of compound A shows 3 signals in a 4:4:1 ratio.Treatment of compound A with hot aqueous acid generates compound B(M+= 113 m/z) can be transformed back to A by using SoCl2. Finallycompound B can be transformed with lithium aluminum hydride (ether)then aqueous acid to compound C (M+ = 99 m/z).

State the reasons for the following reaction.

Provide the H NMR spectrum for cyclopropanol.

Provide the H NMR spectrum for methoxythene.

Provide the H NMR spectrum for 2- propanone.

1.What is the temperature in K of an ideal gas where P = 617 torr,n = 0.0118 mol, and V = 1588.1 mL?

Describe simple chemical tests to distinguish between thecompounds in each of the following pairs. Describe exactly what youwould do and what you would see.

i) Propionic acid and methyl propionate

ii) p-Bromobenzoic acid and benzoyl bromide

iii) Benzonitrile and benzamide

iv) Succinic acid (melting point 182oC) and 2-napthonic acid(melting point 183oC)

v) Acetic anhydride and n-butyl alcohol

vi) Malonic acid (melting point 130oC) and maleic acid (meltingpoint 131oC)

what is electroosmotic drag?

1. What isthe current that can be generated ina fuel cell using a hydrogen flowrate 2 ml/min at 2 atm and 80^oC? N= I/nF, R=0.082 latm/mol K , F=96485 Coulomb/equivalent. How much air is required atthis hydrogen flow rate?

Using reaction equations, show how you would synthesize each ofthe following compounds. You may use only one starting material,3-Pentanone, but once you have synthesized a compound in one partof the question, you may use it in subsequent parts of tehquestion. For example, you may use a compound from your synthesisof ii) to synthesize iii) or iv). You may use any inorganic reagentnecessary, and any organic solvent as a solvent. Show all reactionconditions.

Give the organic product of each of the following reactions orsequence of reactions:

Using reaction equations, show how you would synthesize each ofthe following from the indicated starting materials. Give allappropriate reaction conditions.

i) 2-Bromobenzoic acid from 2-methylaminobenzene(o-toluidine)

ii) 2,4,6-Tribromobenzoic acid from aminobenzene (aniline)

iii) Benzyl alcohol from nitrobenzene

iv) p-Nitrophenol from 1,4-dinitrobenzene

v) Methyl Orange, HO3S-Phenyl-N=N-Phenyl-N(CH3)2, fromaminobenzene (aniline)

Consider the following lab data, gathered from two different labstudents:

a) Which student has valid results?

b) Justify your answer by stating the errors in the incorrectobservation table.

c) Suggest two reasons why a student may experience poor resultsduring this type of chemical experiment.

Manganese dioxide(MnO₂) for use in dry cells is made by electrolyzingsolutions of Mn²⁺, where the following reaction occursat the anode:

Mn²⁺(aq) + 2H₂O(l)