After a student dissolved 0.5 g of white solid in water, she tested the conductivity and determined that the solution did not conduct electricity. The student then concluded: "when the white solid dissolved it 'just disappeared' so some sort of error must have been made because all solids are ionic compounds and, therefore, are electrolytes. " Comment on the student's conclusion. Is her statement a valid conclusion. If so, identify what is correct. If not, write a conclusion that would be correct.

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Asked Oct 4, 2019
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After a student dissolved 0.5 g of white solid in water, she tested the conductivity and determined that the solution did not conduct electricity. The student then concluded: "when the white solid dissolved it 'just disappeared' so some sort of error must have been made because all solids are ionic compounds and, therefore, are electrolytes. " 

Comment on the student's conclusion. Is her statement a valid conclusion. If so, identify what is correct. If not, write a conclusion that would be correct. 

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Expert Answer

Step 1

Given statement:

"when the white solid dissolved it 'just disappeared' so some sort of error must have been made because all solids are ionic compounds and, therefore, are electrolytes. "

Comment on the student's conclusion: The statement is incorrect.

Reason:  Water is universal solvent and has capacity to dissolve variety of solutes.

Solute dissolves in water by forming week hydrogen bonds.

Not only ionic compounds bu...

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General Chemistry

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