The reaction 2K(s) + Br2(l) → 2KBr(s) is a(n) ______________ reaction.

Give Up? O Resources 9.4% re: Hint 8 > Consider these reactions, where M represents a generic metal. 2 M(s) + 6 HC1(aq) → 2 MCl,(aq) + 3 H, (g) 1. AĦ, = –783.0 kJ HCI(g) HCl(aq) → AH2 = –74.8 kJ H,(g) + Cl, (g) → 2 HCl(g) AH3 = –1845.0 kJ MCI, (s) → MCl, (aq) 4. AH -124.0 kJ Use the given information to determine the enthalpy of the reaction 2 M(s) + 3 Cl,(g) → 2 MCl, (s) S. AH kJ about us privacy policy terme of use contact.ua help en 2. 3.

Add all four reaction steps together to get the overall reaction. Remember to cross out anything that occurs on both the reactant and product sides and to combine like terms.  1. 2 Al(s) + 2 KOH (aq) + 6 H2O (l) → 2 KAl(OH)4(aq) + 3 H2(g)  2. 2 KAl(OH)4(aq) + H2SO4 (aq) → 2 Al(OH)3(s) + 2 H2O (l) + K2SO4(aq)  3. 2 Al(OH)3(s) + 3 H2SO4 (aq) → Al2(SO4)3(aq) + 6 H2O (l) 4. Al2(SO4)3(aq) + K2SO4(aq) + 24 H2O (l) →2 (KAl(SO4)2∙12H2O) (s)    For each reactant except water, calculate the number of moles you added (use the stoichiometry of the balanced equation to identify the limiting reactant.  Al: ____ moles  KOH: ____ moles  H2SO4: ____ moles  mass of aluminum: 0.49g  the volume of 1.4 M KOH: 25.0 mL  the volume of 9 M H2SO4: 10.2 mL  mass of watch glass: 50.28 g mass of watch glass plus alum: 58.17g

Fe3+ + Cr2O72- → Fe2+ + Cr3+. Cr2O72- + ClO2- → Cr3+ + ClO2. Fe3+ + ClO2- → Fe2+ + ClO2. No reaction.