February 22, 2017

Homework Help: Chemistry

Posted by Anonymous on Monday, June 30, 2008 at 7:35pm.

In each of the following groups, identify the two substances whose aqueous solutions have common properties to a marked degree by circling the two formulas. Explain why you made your choice.

I'm not the two formulas I circle is correct. Below are my explanations. Fix me where I am wrong. I appreciate your help!

a) CuS, CuCl2, Na2S, KCl

I know CuS, copper (II) sulfide is insoluble, but CuCl2,copper (II) chloride, Na2S, Sodium Sulfide, and KCl, Potassium Chloride, are soluble. The two out of the three (in which I will circle) I see common characteristics are CuCl2 and KCl, since they both have cations of Cl^-.

b) HCl, HC2H3O2, NaC2H3O2

I'd circle HCl, hydrochloric acid, and NaC2H3O2, Sodium Acetate, because they are strong electrolytes.

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