Organic Chemistry Answers

synthesis of Butanedioic acid from 1,4-dibromobutane

what is the structural formula for carboxylic acid and alcohol from which ester, is Isobutyl 4-bromobenzoate prepared?

What is the structural formula for carboxylic acid and amine from which amide, C6H5CON(CH3)2 is prepared.

He 

prepared five organic solvents: 1-pentanol, 2-pentanol, 2-pentanone, benzaldehyde, and m-cresol but he 

didn’t put any label in any of these. Meanwhile, Ryan used the solvents she prepared and placed back in 

different order. Knowing Christian would punch Ryan in his digestive tract because there is a possible 

explosion. Prepare a systematic flow chart of qualitative tests to help Ryan to label the solvents before 

Christian used the organic solvents.

A 100.00 mL buffer solution is prepared by dissolving 1.22 grams benzoic acid (pKa = 4.20, Molar Mass = 122g/mol) and 2.88 grams sodium benzoate (Molar Mass = 144g/mol) in an appropriate amount of water.

a. What is the pH of the buffer solution?

b. What is the pH of the solution if 10.00 mL of 0.25 M HCl is added?

c. What is the pH of the solution if 5.00 mL of 0.25 M NaOH is added instead of HCl?

Just want some proper explanations too to properly understand :>>

• Write a balanced net ionic equation for the reaction.
• Identify which reactant is oxidized and which one is reduced.
• Identify which reactant is the oxidizing agent and which one is the reducing agent.
• Write balanced half reactions for the oxidation and reduction.

a. FeCl2 + Zn = ZnCl2 + Fe

b. Zn + pb(NO3)2 = pb + Zn(NO3)2

c. 3Ag + Au(NO3)3 = Au + 3AgNO3

d. 3Mg + Al2(SO4)3 = 2Al + 3MgSO4

The concentrations of Ca  and Mg  in a sample of river water are 13.4 mg/kg and 3.40 mg/kg, respectively. Express the concentration in molality.

Find Ca in m and Mg in m

A solution prepared by dissolving 180.0  mg of a sugar (a molecular compound and a nonelectrolyte) in 1.00 g of water froze at -1.86°C. What is the molar mass of this sugar? The value of K_f is 1.86°C/m.

g/mol?

If n⁰ is applied to convert grams into moles where n = 30 g of carbon how many moles in it are there?

Convert 4.2 moles into grams of sulfur given a^-2, where a=4.2 moles of sulfur atoms