Chemistry Answers

2. A solution us prepared by mixing 1g of ethanol ( C2H6O) with 100g water to give a final volume of 101 ml. Calculate the mole fraction for the solute and solvent,and the molarity of ethanol in the solution.

Calculate the molality of a 6.55 kg sample of a solution of the solute CH²Cl²dissolve in the solvent acetone C³H0O if the sample contains 876 g of methylene chloride

Draw structures corresponding to the following names:

A. o- Iodobromobenzene

B. o- Nitrotoluene

C. m- Diisopropylbenzene

D. p- Chlorophenol

What products would you expect form the following halogenation reaction?

A. 2-Methylpropene + Br2 ------?

B. 1- pentene + CI2 ----- ?

Classify the following reactions as an addition, elimination, substitution, or rearrangement:

A. CH3 Br +NaOH ------ CH3OH + NaBr

B. H2C = CH2 + HCI -------- CH3CH2CI

C. CH3CH2Br -------- H2C = CH2 + HBr

draw the cis and trans isomers of 3,4- dimethyl - 3- hexene

Which of the following substances exist as cis- trans isomers? Draw both isomers for those that do.

A. 3- heptene

B. 2- methyl- 2-hexene

C. 5-methyl -2- hexene

Draw structure corresponding to the following UIPAC names:

A. 3- methyl - 1- heptane

B. 4,4- dimethyl - 2- pentyne

C. 2- methyl- 3- hexane

D. 2,2,3- trimethyl- 3- hexane

At 22∘C,an excess amount of a generic metal hydroxide, M(OH)2, is mixed with pure water. The resulting equilibrium solution has a pH of 10.16. What is the 𝐾sp of the salt at 22∘C?