To a solution of a substance, gradual addition of ammonium hydroxide results in a black precipitate which does not dissolve in excess of NH4OH. However, when HCl is added to the original gradual addition of ammonium hydroxide results in a black precipitate which does not dissolve in excess of NH4OH. However To a solution of a substance when HCl is added to the original December 7, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related