just need help with these wR§TING NET.IONIC EQUk Name The following reactions re
ID: 890843 • Letter: J
Question
just need help with these
wR§TING NET.IONIC EQUk Name The following reactions result in formation of a complex ion. Weite a balanced molecular equation and then the net-onic equation for each. Asliine reactant. are aqueous solutions unless underlined (in which case they are solids). Show the physical form of all specics (e.g. (aq). (s), etc.). (xsexcess reactano I. zinc chloride + sodium, hydroxide (xs) 2. silver(I) nitrate + potassium cyanide (x) leadcu) hydroxide + sodium hydroxide (s) 3. XICIC (XS) 4, tin(II) nitrate + hydrochloric acid (xs) 5. nickel(II) hydroxide + ammonia (xs)Explanation / Answer
1).
Molecular reaction :
ZnCl2 (aq) +2 NaOH (aq) --- > Zn(OH)2 (s) + 2 NaCl (aq)
Total ionic reaction :
Here the species which are in aquous phase are split into ions.
Zn2+(aq) + 2 Cl- (aq) +2 Na+(aq) + 2 OH- (aq) --- > Zn(OH)2 (s) + 2 Cl- (aq) +2 Na+(aq)
Net ionic equation :
Now common terms to the both side of the equation are cancelled. These are called as spectator ions.
Zn2+(aq) 2 OH- (aq) --- > Zn(OH)2 (s)
2).
Molecular reaction
AgNO3 (aq) + KCN (aq) --- > AgCN (s) + KNO3 (aq)
Complete ionic equation :
Ag+ (aq) + NO3- (aq) + K+(aq) + CN- (aq) --- > AgCN (s) + NO3- (aq)+ + K+(aq)
Net ionic equation
Ag+ (aq) + CN- (aq) --- > AgCN (s)
3).
Pb(OH)2 (s) + NaOH (aq) --- > No reaction :
4).
Molecular reaction :
Sn(NO3)2 (aq) + HCl (aq) --- > SnCl2 (aq) + HNO3 (aq)
Complete ionic equation :
Sn2+ (aq) + 2 NO32- (aq) + H+ (aq) + 2 Cl- (aq) --- > Sn2+ (aq) + 2 NO32-(aq) + H+ (aq) + 2 Cl- (aq)
Net ionic equation :
All the ions soluble so there is no net ionic equation.
5.)
Ni(OH)2(s) +6 NH3 (aq) --- > [Ni(NH3)6]2+ + 2OH- (aq)
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