AP EAMCET202421 May 2024Evening ShiftChemistrys Block ElementsActual
The enamel present on teeth becomes much harder due to the conversion of [3 Ca ₃ ( PO ₄ )₂, X ] into [3 Ca ₃ ( PO ₄ )₂, Y ] . What are X and Y ?
Options
- AX = Ca ( OH )₂, Y = CaF ₂
- BX = Ca ( OH )₂, Y = CaCl ₂
- CX = Ca ( OH )₂, Y = NaCl
- DX = CaO , Y = CaCl ₂
Correct answer
A. X = Ca ( OH )₂, Y = CaF ₂
Step-by-step solution
Calcium phosphate hydroxy apatite. aligned & 3 Ca ₃ ( PO ₄ )₂ Ca ( OH )₂+2 ~F ⁻ 3 [ Ca ₃ ( PO ₄ )₂ CaF ₂ ] & X = Ca ( OH )₂ & Y = CaF ₂ aligned