Discussion Overview
The discussion revolves around the correct chemical formula for magnesium phosphate, specifically addressing the formula Mg3(PO5)2 and its correction to Mg3(PO4)2. Participants also inquire about the chemical formulas for hydrochloric acid and hydroiodic acid, with some confusion regarding the names used.
Discussion Character
- Debate/contested
- Technical explanation
Main Points Raised
- One participant presents the formula Mg3(PO5)2 and questions its correctness, seeking clarification on the formula name.
- Another participant corrects the formula to Mg3(PO4)2, emphasizing the importance of the number 4 instead of 5.
- A later reply suggests writing the molecules in their ion form (Mg2+ and PO43-) to derive the correct formula, mentioning the criss-cross rule for polyatomic ions.
- There is a clarification regarding the names of hydrochloric acid and hydroiodic acid, stating that the terms "Chlorhydric" and "Iodhydric" are not standard.
Areas of Agreement / Disagreement
Participants express disagreement regarding the initial formula presented, with some supporting the correction to Mg3(PO4)2. However, there is no consensus on the use of the terms for the acids mentioned.
Contextual Notes
There are unresolved assumptions regarding the naming conventions for acids and the validity of the initial formula presented. The discussion does not clarify the chemical properties or implications of the formulas.
Who May Find This Useful
This discussion may be useful for students learning about chemical formulas, particularly in the context of polyatomic ions and acid nomenclature.