Question

5) When KCl dissolves in water A) the Clions are attracted to dissolved K+ ions. B) the Clions are attracted to the partially negative oxygen atoms of the water molecule. C) the K+ ions are attracted to Clions on the KCl crystal. D) the Kions are attracted to the partially negative oxygen atoms of the water molecule. E) the Kions are attracted to the partially positive hydrogen atoms of the water molecule. 6) in water, a substance that partially ionizes in solution is called a A) weak electrolyte. B) nonelectrolyte. D) nonconductor. E) strong electrolyte. C) semiconductor. 7) An equivalent is A) the amount of ion that has a 1+ charge. B) the amount of ion that has a 1-charge. C) the amount of ion that carries 1 mole of electrical charge. D) 1 mole of any ion. E) 1 mole of an ionic compound. E) 3.0 Eq 8) How many equivalents are present in 5.0 moles of A13+? A) 15 Eq B) 1.3 Eq C) 5.0 Eq D) 0.67 Eq

Answer 1

When KCl dissolves in water, K+ is attracted towards negative oxygen atom of the water molecules.

KCl will completely dissociates into K+ and Cl- ions.

Option D is right.

2. Weak electrolyte is the one which partially ionizes in the solution.

Option A is right.

3.An equivalent can be defined as the Amount of substance that can react or supply one more of electrons. Option C is right.

4. 1 equivalent is equal to 1 mole of electrons.

5 moles of Al+3 requires 15 equivalents of electrons.

Option A is right