Question

Which acid is formed when $Si{F}_4$ reacts with water?

• A. $H_{2}S{O}_4$
• B. $H_{2}Si{F}_4$
• C. $H_{2}Si{F}_6$
• D. None of these

Answer 1

The correct option is C $H_{2}Si{F}_6$

$Si{F}_4+4H_{2}O\to Si(OH{)}_4+4HF$

$Si{F}_4+2HF\to H_{2}Si{F}_6$