• # question_answer Which of the following product is formed when $Si{{F}_{4}}$ reacts with water [Pb. CET 2003] A) $Si{{F}_{3}}$ B) ${{H}_{4}}Si{{O}_{4}}$ C) ${{H}_{2}}S{{O}_{4}}$ D) ${{H}_{2}}Si{{F}_{4}}$

Solution :

When silicon tetra fluoride reacts with water ${{H}_{2}}Si{{F}_{6}}$ and ${{H}_{4}}Si{{O}_{6}}$ are formed $\underset{\text{Silicon tetrafluoride}}{\mathop{3Si{{F}_{4}}}}\,+\underset{\text{Water}}{\mathop{4{{H}_{2}}O}}\,\to 2{{H}_{2}}Si{{F}_{6}}+\underset{\text{White silicic acid}}{\mathop{{{H}_{4}}Si{{O}_{4}}}}\,$

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