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12 Cards in this Set
- Front
- Back
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which three ions solution will redissolve in NaOH
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Al, Pb, Zn
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which two ion solution will redissolve in NH3
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Cu, Zn
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the equations when Al3+ ion solution is added into excess NaOH
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Al3+ + 3OH- --> Al (OH)3
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the 2 equations when Cu2+ ion solutions is added into excess NH3
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Cu(OH)2 + 4NH3 --> [Cu(NH3)4]2+ + 2OH-
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colour of iron 3 oxide
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reddish brown
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colour of copper
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redish brown
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colour of copper 2 oxide
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black
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colour of zinc oxide
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yellow when hot, white when cold
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colour of laed 2 oxide
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yellow when cold , hot when orange
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requirements of titration
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1. no side reactions and measurable end point
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standard primary and secondary
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refer to notes
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SO2 + NaOH product
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NaHSO4
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