Not only does Snape need to teach his students about hydration states, but also naming hydrates. What is the correct formula for barium hydroxide octahydrate and magnesium sulfate heptahydrate.
A) BaOH · 8H₂O and MgSO₄ ·6H₂O
B) Ba(OH)₂ · 8H₂O and Mg₂SO₄ ·6H₂O
C) Ba(OH)₂ · 8H₂O and MgSO₄ ·6H₂O
D) Ba(OH)₂ · 8H₂O and MgSO₄ ·7H₂O
E) BaOH · 8H₂O and MgSO₄ ·7H₂O
