Question detail
Which factor primarily determines the solubility of an ionic compound in water?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Bonding
Question
- A. The size of the ions
- B. The charge of the ions
- C. The strength of the ionic bonds
- D. The presence of covalent bonds
Answer
The charge of the ions
Explanation
The solubility of an ionic compound in water is primarily determined by the charge of the ions; higher charges lead to stronger ionic bonds, which can decrease solubility.
Common mistake
Misunderstanding Ionic Lattice Strength
Students often confuse the strength of ionic lattices with the size of the ions alone, neglecting the effect of charge.
To correctly explain ionic lattice strength, remember that it is influenced by both the charge of the ions and their ionic radii. Use the formula for lattice energy, which indicates that higher charges lead to stronger attractions. For example, when comparing NaCl and MgO, MgO has a higher lattice energy due to the +2 charge on Mg compared to the +1 charge on Na. Therefore, the ionic lattice strength increases with higher ionic charges and smaller ionic radii.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.