Balance them; identify them as precipitation, neutralization or redox. If redox, identify the oxidizing and reducing agent. Please explain.
1. Al(OH)3 (aq) + HNO3 (aq) ? Al(NO3)3(aq) + H20 (l)
2. (NH4)2Cr2O7 (s) ? Cr2O3 (s) + H2O (g) + N2(g)
3. AgNO3(aq) + FeCl3(aq) ? AgCl(s) + Fe(NO3)3(aq)
Solution
1.
Al(OH) 3 (aq) + 3 HNO 3 (aq) -------> Al(NO 3 ) 3 (aq) + 3 H 2 O (l)
Neutralisation reaction
2.
(NH 4 ) 2 Cr 2 O 7 (s) ----------> Cr 2 O 3 (s) + 4 H 2 O (g) + N 2 (g)
Redox reaction
Oxidising agent : ( undergoes reduction) = Cr (Cr 2 O 7 2- )
Reducing agent : ( Undergoes oxidation ) : N ( NH 4 + )
3.
3 AgNO 3 (aq) + FeCl 3 (aq) -----> 3 AgCl(s) + Fe(NO 3 ) 3 (aq)
Precipitation reaction
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