What would you expect to form when: (a) Sn is heated with concentrated aqueous NaOH; (b) SO2 is passed over PbO2; (c) CS2 is shaken with aqueous NaOH; (d) SiH2Cl2 is hydrolysed by water; (e) four molar equivalents of ClCH2SiCl3 react with three equivalents of Li[AlH4] in Et2O solution