1.
2. Write down the complete molecular equations for each of the above reactions. CIRCLE the
precipitate (if any), and put a SQUARE BOX around the gas (if any). Then balance the equations
Yype of reaction? (precipitation, redox, acid-base, or gas evolution) Reactants (if any)
1NaCKNO 2 NaCIAgNO> 3 Na,CO,+ Caci 41 CaCO3 + 5 FeCls NHOH 6 Na,CO,+HCI
H2SO4> + HNO3 7 NaOH 8 NH.OHHSO 9 CuSO, F 10 MgHC
Solution
s.no Reaction Reaction type Net Ionic reaction
1) NaCl + KNO 3 ---> NaNO 3 + KCl (double replacement) K +
(aq) + Cl -
(aq) ----> KCl (s)
2)Â Â NaCl + AgNO 3 -----> NaNO 3 + AgCl (double replacement) Ag +
(aq) + Cl -
(aq)----> AgCl
(s)
3) Na 2 CO 3 + CaCl 2 -----> CaCO 3(s) + 2 NaCl (double replacement) Ca +2
+ CO 3
2-
---->CaCO 3
(s)
4) CaCO 3 + H 2 SO 4 -------> CaSO 4 (s) + H 2 O (l) + CO 2(g) (double replacement)Â Â Ca +2
+SO 4
2-
-----> CaSO 4 (s)
5) FeCl 3 + 3NH 4 OH --------> 3NH 4 Cl + Fe(OH) 3 Fe 3+
+ 3OH -
-----> Fe(OH) 3(s)
6) Na 2 CO 3 + 2HCl ------> 2NaCl + H 2 O (l) + CO 2(g) (double replacement) 2H +
(aq) + CO 3
2-
----
> H 2 O (l) + CO 2(g)
7) NaOH + HNO 3 -------> NaNO 3 + H 2 O (l) (acid base reaction) H +
(aq) + OH -
(aq)---->H 2 O (l)
8) NH 4 OH + 2H 2 SO 4 --------> (NH 4 ) 2 SO 4 + 2H 2 O (acid - base reaction)H +
(aq) + OH -
(aq)-
--->H 2 O (l)
9) CuSO 4 + Fe -------> FeSO 4 + Cu (Displacement reaction)Fe (s) + CuSO 4(l) ----> FeSO 4(l) + Cu
(s)
10) Mg + 2HCl ------> MgCl 2 + H 2(g) (Double replacement reaction) Mg (s) + 2H +
(aq) --->Mg (s)
+ H 2(g)