Hydroxides are insoluble except which cations?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Prepare for the IGCSE Edexcel Chemistry Test with engaging flashcards and multiple-choice questions. Each question comes with detailed hints and explanations to enhance your learning experience. Master your exam with confidence!

Multiple Choice

Hydroxides are insoluble except which cations?

Explanation:
Hydroxides are generally insoluble, but hydroxides of alkali metals dissolve in water. Sodium hydroxide readily forms Na+ and OH− ions in solution because its ions are well hydrated and the lattice in solid NaOH breaks apart easily. The others form hydroxides with higher lattice energy and lower hydration efficiency, so calcium hydroxide and magnesium hydroxide are only sparingly soluble and iron hydroxide is insoluble. Therefore, the soluble exception among these is the sodium hydroxide case.

Hydroxides are generally insoluble, but hydroxides of alkali metals dissolve in water. Sodium hydroxide readily forms Na+ and OH− ions in solution because its ions are well hydrated and the lattice in solid NaOH breaks apart easily. The others form hydroxides with higher lattice energy and lower hydration efficiency, so calcium hydroxide and magnesium hydroxide are only sparingly soluble and iron hydroxide is insoluble. Therefore, the soluble exception among these is the sodium hydroxide case.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy