You will conduct the following three reactions in this experiment. In the space

Question

You will conduct the following three reactions in this experiment. In the space provided below, write the balanced net ionic reaction equations from the descriptions. Use the table of thermodynamic data in your text (or another approved resource) to calculate the molar enthalpy of the reactions. Reaction 1: An aqueous solution of sodium hydroxide reacts with an aqueous solution of hydrochloric acid, yielding water. Reaction 2: An aqueous solution of sodium hydroxide reacts with an aqueous solution of ammonium chloride, yielding aqueous ammonia, NH3, and water. Reaction 3: An aqueous solution of hydrochloric acid reacts with aqueous ammonia, NH3, yielding aqueous ammonium chloride. Reaction Balanced reaction equation Delta H (kJ/mol)

Explanation / Answer

NaOH(aq) + HCl (aq) ----> NaCl(aq) + H2O(l) delta H= -56.0 kJ

[1Hf(H2O (l)) + 1Hf(NaCl (aq))]. - [ 1Hf(NaOH (aq))+ 1Hf(HCl (aq))]

NaOH(aq) + NH4Cl (aq) -----> NaCl(s) + NH3(aq) + H2O(l) delta H= 30.56KJ

entalpy of reaction=

[1Hf(NH3 (aq)) + 1Hf(H2O (l)) + 1Hf(NaCl (aq))] - [1Hf(NH4Cl (aq)) + 1Hf(NaOH (aq))]

HCl(aq) + NH3(aq) ----> NH4Cl(aq) delta H =-52.8KJ

delta Hrxn = delta H product -delta H reactant

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