HX(aq) + KOH(aq) H2O(l) + KX(aq) When 50.00 mL of each reactant are mixed togeth

Question

HX(aq) + KOH(aq) H2O(l) + KX(aq)
When 50.00 mL of each reactant are mixed together the temperature goes from 19.74 oC
to 23.66 oC. Calculate the ?Hreaction in kJ/mole HX. [HX] = 2.00 M

Explanation / Answer

Write balanced complete ionic and net ionic equations for each of the following reactions. (a) NH4Cl(aq) + NaOH(aq) H2O(l) + NH3(g) + NaCl(aq) (b) Na2SO4(aq) + CaI2(aq) CaSO4(s) + 2 NaI(aq) (c) HI(aq) + KOH(aq) H2O(l) + KI(aq) (d) K2S(aq) + CoCl2(aq) 2 KCl(aq) + CoS(s) Balanced equation (a) NH4Cl(aq) + NaOH(aq) --------------> H2O(l) + NH3(g) + NaCl(aq) (b) Na2SO4(aq) + CaI2(aq) ------------> CaSO4(s) + 2 NaI(aq) (c) HI(aq) + KOH(aq) ---------------> H2O(l) + KI(aq) (d) K2S(aq) + CoCl2(aq) --------------> 2 KCl(aq) + CoS(s) Balanced ionic equation (a) NH4+ + OH-(aq) --------------> H2O (l) + NH3(g) (b) SO4 2- (aq) + Ca +(aq) ------------> CaSO4(s) (c) H+ (aq) + OH-(aq) ---------------> H2O(l) (d) S2- (aq) + Co2+(aq) --------------> CoS(s)

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