Question

Experiment 5- Data and Analysis Part A. Chemical Reactivity Fill in the one remaining blank for reaction A. Then fill in all the blanks for reactions B through G following the pattern established for reaction A. If you have trouble identifying the products of a reaction, feel free to consult with your instructor. Reaction A Cu(s) + ZnSO,(ag) red-brown solid/colorless solution Zn(s) +CuSo(ag) Equation: gray solid/blue solution Observations: Endothermic or exothermic reaction Reaction B Mg(s) +HCl(aq) Equation: Observations Endothermic or exothermic reaction Reaction C NaCl(aq)+AgNO,(aq) Equation: Observations: Endothermic or exothermic reaction Reaction D BACL(ag)+ Na,SO (ag) Equation: Observations: Endothermic or exothermic reaction Reaction E Equation: Pb(NO),(ag)+K,Cro(ag) Observations: Endothermic or exothermic reaction Reaction F Equation: FeC1,(ag)+ KSCN(aq) Observations: Endothermic or exothermic reaction 61

Answer 1

All the above reactions are double displacement reaction and most of them form solid precipitate after the ion exchange. As product formed is solid so heat must me liberated during the reaction but generally reactions are carried out in room temperature and heat liberated is negligible so it does not make any sense during the reaction.
Reaction a Zn (s) + guay Solid Cuso (aq) - Blue solo Culs) + Inso4 lagi Med brown colows less. solid solution Exotherme Reaction B Plq (s) + 2Hd caq) shiny gray colourless sold solution sogch Colowless solution & Hg (6) Colourless goo Exothermie Rearction c Nad (aq) + colourless solution Ag Nolaq) - Colownloss solution I Nano 99 colownloss Solution. A cles) white Sold Exothermic

Reaction D Baca (aq) & colourless Sol, Basoy (s) White Solrd Na2SO4 (aq) - Colowsless Sol. + 2Nad eaq) : colowy loss solution Exothermic Reaction E (aq) + kacho 4 lag) - Yellow solution Pb (NO₂)2 colourless solution Pb crot yellow "pot. + 2KNO₂ colownless solution Exotherma