Of course. I got a U in my first chemistry test and now I'm averaging As. Just gotta understand the content, go over it regularly and do past papers. I usually watch YouTube videos on the topics I find difficult and that helps.
Can somebody help me please? When testing for a sulfate ion, you add BaCl2 to form a white precipitate. If no sulfate ion is present, what is the observation? Does the solution stay clear or can a different coloured precipitate form?
Can somebody help me please? When testing for a sulfate ion, you add BaCl2 to form a white precipitate. If no sulfate ion is present, what is the observation? Does the solution stay clear or can a different coloured precipitate form?
the solution stays colourless. All group 2 compound form white precipitate Only transition metals form coloured ones (dichromate, permagnate have colours but they are transition metal anion)
the solution stays colourless. All group 2 compound form white precipitate Only transition metals form coloured ones (dichromate, permagnate have colours but they are transition metal anion)
Thank you! Do you know which transition metals would form a blue precipitate?
Multiply it by the Molar mass of Mg(OH)2 and that's the mass of Mg(OH)2
and about that ion thing, it's a separate question if you want the number of moles of OH- ions that is double the number of moles of Mg(OH)2 because there are 2 OH- in one Mg(OH)2