What are hydroxides?

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Study for the IMAT Chemistry Exam. Access flashcards and multiple choice questions; hints and explanations included for each question. Prepare effectively for your exam.

Multiple Choice

What are hydroxides?

Explanation:
Hydroxides are compounds that contain the hydroxide ion, OH−. They are typically formed when a metal cation is bonded to OH−, giving metal hydroxides such as NaOH or Ca(OH)2. In water, they produce alkaline solutions because the OH− ions raise the pH. This matches the idea of compounds containing OH with a metal. The other descriptions refer to carbonates (CO3), oxyacids (acids containing oxygen), and amino groups (NH2), which are not hydroxides.

Hydroxides are compounds that contain the hydroxide ion, OH−. They are typically formed when a metal cation is bonded to OH−, giving metal hydroxides such as NaOH or Ca(OH)2. In water, they produce alkaline solutions because the OH− ions raise the pH. This matches the idea of compounds containing OH with a metal. The other descriptions refer to carbonates (CO3), oxyacids (acids containing oxygen), and amino groups (NH2), which are not hydroxides.

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