5. Can one have electrostatic stabilisation in a solvent other than water? If yes, under which conditions? 6. The isoelectric pH of ZnO in water is 9. Would it be wise to stabilise it in a pH of 2 (e.g. ~0.01 M HCl)? Explain… 7. After a nanoparticle wet synthesis, they are in a stable colloidal suspension. What can be done if one now wants to destabilise the suspension? 8. Can one have electrostatic stabilisation in oil? What needs to be done if one wants to have such a stabilisation in a non-aqueous solvent?