• # question_answer Which of the following acid is formed when $Si{{F}_{4}}$ reacts with water [BHU 2004] A) $Si{{F}_{4}}$ B) ${{H}_{2}}Si{{F}_{4}}$ C) ${{H}_{2}}S{{O}_{4}}$ D) ${{H}_{2}}Si{{F}_{6}}$

Silicon tetra fluoride on hydrolysis furnish ortho silicic acid and hydrogen silicofluoride. $\underset{\begin{smallmatrix} (\text{Silicon tetra} \\ \text{Fluoride}) \end{smallmatrix}}{\mathop{3Si{{F}_{4}}}}\,+\underset{\text{(Water)}}{\mathop{4{{H}_{2}}O}}\,\xrightarrow{{}}\underset{\begin{smallmatrix} (\text{Ortho} \\ \text{Silicic acid}) \end{smallmatrix}}{\mathop{{{H}_{2}}Si{{O}_{4}}}}\,+\underset{\begin{smallmatrix} (\text{Hydrogen Silico} \\ \text{Fluoride}) \end{smallmatrix}}{\mathop{2{{H}_{2}}Si{{F}_{4}}}}\,$