Why silicon tetrachloride reacts with water to produce SiO2 but carbon tetrachloride does not react with water? 1. SiCl4 can act as a Lewis base. 2. SiCl4 can act as a Lewis acid. 3. 1 and 4 only. 4. 2 and 3 only. 5. CCl4 can act as a Lewis acid. 6. None of these 7. ClCl4 can act as a Lewis base.