9
QuizMultiple Choice

Reactions in Aqueous Solutions

Question 9 • HCISD-Integrated Physics and Chemistry A-CR SUMMER

Which substance is a strong electrolyte?

Answer
A
NH3
B
Ba(OH)2
C
C12H22O11
D
CH3COOH

Explanation

Ba(OH)2 is a soluble ionic compound and a strong base, so it dissociates almost completely into Ba2+ and OH− ions in water. These mobile ions make the solution conduct electricity strongly. NH3 and CH3COOH are weak electrolytes, while C12H22O11 dissolves without forming ions.

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