give reasons: HF is stored in a WAX coated glass bottles When NaBr is heated with conc - Chemistry - The p-Block Elements

Question

give reasons:

HF is stored in a WAX coated glass bottles
When NaBr is heated with conc H2SO4,
Br2 is produced but when NaCl is heated HCl is
produced

2 How is XeO3 prepared? Reprsent with the chemical
equations

Prerna Bansal · Accepted Answer

Hi,

Hydrofluoric acid attacks glass with
the formation of fluorosilicate ions [SiF6]2-
Thus it is stored in wax coated glass bottles to prevent the
reaction

SiO2 + 6HF →
[SiF6]2- + 2H+ +
2H2O

The reduction potential of
Br2/Br- is less as compared to
Cl2/Cl- Thus the tendency of Br- to oxidise
is more as compared to Cl-

Here's the reaction
3XeF4 + 6H2O
→ 2Xe + XeO3 + 12HF + 3/2
O2

XeF4 reacts violently
with water to form XeO3

give reasons: HF is stored in a WAX coated glass bottles. When NaBr is heated with conc.H2SO4, Br2 is produced but when NaCl is heated HCl is produced. 2. How is XeO3 prepared? Reprsent with the chemical equations.

give reasons:

HF is stored in a WAX coated glass bottles.

When NaBr is heated with conc.H₂SO₄, Br₂ is produced but when NaCl is heated HCl is produced.

2. How is XeO₃prepared? Reprsent with the chemical equations.