1. Complete and balance each reaction. Determine if a solid precipitate is forme

Question

1. Complete and balance each reaction. Determine if a solid precipitate is formed b. Pb(NO3)4(a)Na2SO4(aq) c. FeCla(aq)NaNO3(aq) d. Li3PO(aq)CaCl2(aq) 2. Complete and balance each reaction. Determine if a gas is evolved. a. HCl(aq)Na CO3(aq) b. NHaCl(aq) Ca(OH)2(aq) c. CuSO (aq)FeCl3(aq)> 3. Complete and balance each acid base neutralization reaction. a. Ca(OH)2(aq) HCI(aq) > b. HNO3(aKOH(aq) c. HCIO(aq) Ca(OH)2(aq) -> 4. Balance each reaction. Write a net ionic equation for each reaction. a. Li2SO(aq) CaCl2(aq)LiCl(aq) CaSO4(s) c. NaOH(aq) HNO3(aq)NaNOa(aq) H20(0) 5. Assign oxidation number to each element. a. M b. Al*3 C. FeCl3 d. Na2S0 e. CrO3 f. MnO4 . 6. Assign oxidation number to each element. Determine and label oxidation half reaction and reduction half reaction. Balance the electrons passed in the half reactions. Balance the whole reaction a. Mg +CuCl2MgCl2 Cu b. H2S NaCIO H2SO4NaC

Explanation / Answer

Ans 1 :

Start by writing the products of each reaction. Now equate the species on each side carefully.

So the balanced reaction are :

a) NaCl (aq) + AgNO3 (aq) = AgCl (s) + NaNO3 (aq)

b) Pb(NO3)2 (aq) + Na2SO4 (aq) = PbSO4 (s) + 2NaNO3 (aq)

c) FeCl3 (aq) + 3NaNO3 (aq) = Fe(NO3)3 (aq) + 3NaCl (aq)

d) 2Li3PO4 (aq) + 3CaCl2 (aq) = Ca3(PO4)2 (s) + 6LiCl (aq)

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