n. Pb(NO3)2(aq) + MgSO4(aq) 8. Write a balanced formula unit and a net ionic equ
ID: 578305 • Letter: N
Question
n. Pb(NO3)2(aq) + MgSO4(aq) 8. Write a balanced formula unit and a net ionic equation for the following reaction. Include the states (s, (, g, or aq) of all reactants and products. zinc chloride + lithium hydroxide zinc hydroxide + lithium chloride 9. When Co(NO)2 solution is mixed with limited NHsay a precipitate forms. When excess NHsag is added, the precipitate dissolves. Write balanced formula unit and net ionic equations for these observations. Include the states (s, l, g, or aq) of all reactants and products.Explanation / Answer
Q8
Zinc Chloride = zn2+ + Cl- = ZnLc2(aq)
Lithium hydroxide = Li+ + Oh- = LiOH
zinc hydroxide = Zn2+ + OH- = Zn(OH)2
lithium chloride = Li+ + Cl- = LiCl
the equation
ZnCl2 + LiOH = Zn(OH)2 + LiCl
balance
ZnCl2 + 2LiOH = Zn(OH)2 + 2LiCl
add phases
ZnCl2(aq) + 2LiOH(aq) = Zn(OH)2(s) + 2LiCl(aq)
Q9
1st obervation
NH3 + H2O -- >NH4OH
1st inet ionic
Co2+(aq) + OH-(aq) --> Co(OH)2(aq)
2nd net ionice
Co(OH)2(s) + 4H2O(l) --> [Co(H2O)6]2+(aq)
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