Need help in order to study for a test! Thank you in advance The following resul

Question

Need help in order to study for a test! Thank you in advance

The following result in the formation of a complex ion. Write a balanced molecular and then a net ionic equation for each . Assume reactants are aqueous solutions unless bolded (in which case they are solids). Please show the physical form of all species ( like aq or s ). xs= excess reactant

1. zinc chloride + sodium hydroxide (xs)
2. Silver (I) nitrate +potassium cyanide (xs)

3. lead (II) hydroxide + sodium hydroxid (xs)

4. tin (II) nitrate + hydrochloric acid (xs)

5. nickel (II) hydroxide + ammonia (xs)

Explanation / Answer

1. ZnCl2(aq) + 2NaOH(aq)----> Zn(OH)2(s) + 2NaCl(aq)

ionic equation

Zn+2(aq)+2Cl-(aq) + 2Na+(aq)+2OH-(aq)----> Zn(OH)2(s) + 2Na+(aq)+2Cl-(aq)

removal of spectetor ios to get net ionic equation

Zn+2(aq) + 2OH-(aq) ------> Zn(OH)2(s)

2. AgNO3(aq) + KCN(aq) -----> AgCN (s) + KNO3(aq)

ionic equation

Ag+(aq)+NO3-(aq) + K+(aq)+CN-(aq) -----> AgCN (s) + K+(aq)+ NO3(aq)

removal of spectetor ions toget net ionic equation

Ag+(aq) + CN- (aq) ------> AgCN(s)

3.Pb(OH)2(aq) + NaOH(aq) -----. No reaction

4. Sn(NO3)2(aq) + 2HCl(aq) ---> SnCl2(aq) + HNO3(aq)

ionic equation

Sn+2(aq) + 2(NO3)-(aq) + 2H+(aq)+Cl-(aq) ---> Sn+2(aq)+2Cl-(aq) +2 H+(aq)+2NO3-(aq)

5. Ni(OH)2(aq) + 2NH3(aq) ----> [Ni(NH3)2](OH)(s)

ionic equation

Ni+2(aq) + 2(OH)-(aq) + 2NH3(aq) ----> [Ni(NH3)2](OH)(s)

net ionic equation

Ni+2(aq) + 2(OH)-(aq) + 2NH3(aq) ----> [Ni(NH3)2](OH)(s)

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