Reference no: EM132287029

1) in which one of the following the oxidation number in nitrogen is given incorrectly?

a) N2H4 (-2)

b) NaN3 (-1)

c) HNO2 (+3)

d) N2o3 (+3)

e) H2N2O2 (+1)

2) which reaction does the oxidation number of hydrogen changes?

HCl(aq) + NaOH(aq) ---> NaCl(aq) +H2O (l)

2HClo4 (aq) + CaCO3 (s) ---->Ca(ClO4)2 (aq) + H2O(l) +CO2(g)

CaO(s) + H2O (l) ----> Ca(OH)2 (s)

2Na (s) + 2H2o (l)------> NaOH(aq) + H2 (g)

3) Which combination will produce a precipitate?

a) NH4OH (aq) and HCl (aq)

b) AgNo3 (aq) and Ca (C2H3O2)2 (aq)

c) NaOH (aq) and HCl (aq)

d) NaCl (aq) and HC2H2O2(aq)

e) NaOH (aq) and Fe(NO3)2 (aq)

4)which one will dissolve in 1000g of water and produce the greatest amount of particles?

a) 0.030 mol of ammonium nitrate NH4NO3

b) 0.030 mol of barium chloride BaCl2

c) 0.030 mol of calcium sulfate CaSO4

5) which compound is insoluble in water?

a) HgSO4

b) FeSO4

c) Li2SO4

d) (NH4)2SO4

6) the net ionic equation for the reaction between aqueous sulfuric acid and aqueous sodium hydroxide?

7) What is the oxidizing agent in the redox reaction?

HG2+ (aq) + Cu(s) -----> Cu2+ (aq) + Hg (l)

8) what is the complete balance equation carried out in aqueous solution and the total ionic and net ionic equation for

KNO3(aq) +LiC2H3O2(aq) ---------> KC2H3O2(aq) + LiNO3 (aq)