Chem 112 (Question 3) Pre-Laboratory Questions 1. The solubilities of four unkno

Question

Chem 112 (Question 3) Pre-Laboratory Questions 1. The solubilities of four unknown compounds (A, B, C, and D) were tes ted in (CHCH,CH-CH-CH). The results of the solubility tests are provided below data, determine whether compounds A, B, C, and D are polar or nonpolar ater and 1-hexene ided below. From the solubility polar or nonpolar Solubility in water insoluble soluble soluble soluble Solubility in 1-hexene soluble insoluble insoluble insoluble lar or Nonpolar Compound Olar 2. The electrical conductivities of the unknown compounds (A, B, C, and D) were determined using a conductivity detector. The results of the conductivity tests are provided below. Determine whether compounds A, B, C, and D are strong, weak, or nonelectrolytes. Compound Strong/Weak/Nonelectrolyte Conductivity Test LED does not light LED does not light LED lights brightly LED lights dimly 49

Explanation / Answer

conisder the given comppounds

1) LiCl

it is an ionic compound

there is differenc between the electronegativites of Li and Cl

so

it is a polar

also

it is a strong electrolye

So

lokking the tables

this will suit compound C

so

LiCl is compound C

2) HCl02

it is a polar compound

and

a weak electrolye

so

the compound which suits these properties is D

so

HCL02 is compound D

3)

HO-CH2-CH2-NH2

it is polar because of the presnec of OH and NH2 groups whihc can form ions

but it is non electrolyte

so

H0-CH2-CH2-Nh2 is compound B

4)

C6H12

it is niether polar nor a electrolyte

so

C6h12 is compound A

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