Ch. 8 Note Set #2 Name______ ANSWERS FOR… _________________________________________Period__5_ Date _3_ /_31_ /_17_ Complete and then balance the following Molecular Equation: ___Na(s) +___HOH (l)  ___ NaOH (aq) + ___ H2 (g) Write the Complete Ionic Equation __Na (s)+__H+1(aq)+___ OH‐1 (aq) ___ Na+1 (aq)+___OH‐1 (aq)+___ H2 (g) Write the Two Ionic Half Reactions __1_ Na (s)  __1_ Na + 1(s) (aq) +___ e‐ __H+1(aq) + 1 e‐ ___ H2 (g) Using the answer space provided please complete the following questions from Chapter 8 in the text. These are due on Monday at the start of the period and will need to be completed prior to starting the lab. Page 273 #29 b 1 Zn(s) + 2 HNO3(aq)  1 Zn(NO3)2(aq) + 1 H2(g) Page 273 #29 e 2 Cs(s) + 2 H2O(l)  2 CsOH(aq) + 1 H2(g) More on the back Page 274 #32b Balance this Molecular Equation in the space provided b. 2_ HCl (aq) +__1__ Zn(s) __1__ H2 (g) + __1__ ZnCl2 (aq) _
Page 274 #32b Provide this complete ionic Equation for this reaction in the space provided 2 H+(aq)+2Cl‐(aq)+1 Zn(s) 1H2 (g)+ 1 Zn+2(aq)+2Cl‐(aq) Page 274 #32b Provide the TWO ionic half reactions for this reaction in the space provided 1 Zn(s) 1 Zn+2(aq)+2 e‐ 2 H+(aq)+ 2 e‐1H2 (g) Page 274 #32e Balance this Molecular Equation in the space provided 1 Zn(s) + 1 CuSO4 (aq)  1 ZnSO4(aq) + 1 Cu(s) Page 274 #32e Provide this complete ionic Equation for this reaction in the space provided 1 Zn(s)+1 Cu+2(aq)+1 SO4‐2(aq)1 Zn+2(aq)+1 SO4‐2(aq)+1 Cu(s) Page 274 #32e Provide the TWO ionic half reactions for this reaction in the space provided 1 Zn(s) 1 Zn+2(aq)+2 e‐ 1 Cu+2(aq)+ )+2 e‐ 1 Cu(s) Page 274 #33a Balance this Molecular Equation in the space provided 2 H2O2 (aq)  2H2O(l) + 1 O2 (g) Page 274 #33a Provide this complete ionic Equation for this reaction in the space provided FOR NOW… 4 H+ (aq)+ 2 O2‐2(aq)  4 H+(aq) + 2O1‐2(aq) + 1 O2 (g) Page 274 #33a Provide the TWO ionic half reactions for this reaction in the space provided 1 O2‐2(aq) +2 e‐  2O1‐2(aq) 1 O2‐2(aq) 1 O2 (g) + 2 e‐ The (‐1) goes to (‐2) because it gets an electron from the other peroxide molecule