Why does PbO2 turn dark brown when HNO3 is added?

Started by Timothy | Last post by Timothy February 18, 2010, 03:46:05 PM

Why does PO3- ion undergo polymerization easily whereas NO3- does not?

Started by adianadiadi | Last post by jcjlf March 15, 2011, 04:38:03 PM

Why does Pt(s) dissolve in a mixture of HCl and NO3-, but not seperately?

Started by billsauce | Last post by Borek May 06, 2012, 01:45:23 PM

Why does rate of reaction decrease with time?

Started by Needaask | Last post by Needaask September 30, 2013, 01:38:47 AM

Why does silver only can have a coordination number of 2?

Started by gertrudetrumpet | Last post by dipesh747 March 19, 2012, 07:43:59 PM

Why does sulfur exist as S8 and not S2 like in O2?

Started by Technicalhuman | Last post by Corribus December 03, 2013, 11:58:34 AM

why does the equilibrium constant changes with temperature and pressure?

Started by Erik | Last post by Jorriss August 21, 2012, 12:22:31 PM

why does tio2 change to yellow?

Started by karo18 | Last post by karo18 June 12, 2018, 09:11:00 AM

Why does trans-1,2-dichloroethylene doesn't possess an improper rotation (S)?

Started by AussieKenDoll | Last post by mjc123 April 05, 2019, 04:43:19 AM

Why does Zinc have a lower 2nd ionization energy than Cupper?

Started by Mitch | Last post by Winga February 11, 2006, 05:18:52 AM

Why does ZnS doped Ag turn yellow?

Started by priyoX | Last post by jasongnome October 14, 2016, 02:04:10 AM

Why don't precious metals oxidize or corrode easily?

Started by Guderian93 | Last post by Enthalpy October 24, 2013, 07:05:51 PM

Why don't we see Sc2+ ion?

Started by Heisenberg97 | Last post by Heisenberg97 December 10, 2016, 02:49:19 PM

why double salts form....??

Started by AdiDex | Last post by Borek September 08, 2014, 05:23:09 AM

WHY Fe3+ don't form stable complex with NH3 ?

Started by nesta1023 | Last post by nesta1023 December 08, 2011, 11:05:49 PM