Final answer:
The chemical formulas refer to hydrated ionic compounds: A) MgSO₄ · 7H₂O is magnesium sulfate heptahydrate, B) Na₂CO₃ · 10H₂O is sodium carbonate decahydrate. C) and D) do not correspond to commonly recognized hydrated forms of the respective compounds.
Step-by-step explanation:
The chemical formulas you've asked about represent hydrated ionic compounds, which are ionic compounds that have a specific number of water molecules associated with them in their crystalline structure. Let's identify each formula:
- A) MgSO₄ · 7H₂O: This compound is magnesium sulfate heptahydrate, also known as Epsom salt.
- B) Na₂CO₃ · 10H₂O: This is sodium carbonate decahydrate, commonly known as washing soda.
- C) MgSO₄ · 10H₂O: This does not correspond to the commonly recognized hydrated form of magnesium sulfate. The known form is with 7 molecules of water (MgSO₄ · 7H₂O), as listed in A.
- D) Na₂CO₃ · 7H₂O: Similarly to C, this is also an uncommon form. The widely known hydrated form of sodium carbonate is with 10 molecules of water (Na₂CO₃ · 10H₂O), as listed in B.