Calculate the standard enthalpy change for the following reaction at 25 degrees C. HCl(g) + NaOH(s)...

Calculate the standard enthalpy change for the following reaction at 25 degrees C.

HCl(g) + NaOH(s) ---> NaCl(s) + H₂O(l)

Solutions

Expert Solution

From standard table,

H_f^o of

HCl(g) = -92.3 kJ/mol

NaOH(s) = -425.8 kJ/mol

NaCl(s)= -411.2 kJ/mol

H₂O(l) = -285.8 kJ/mol

Now, H_rxn^o = moles *H_f^o (products) - molesH_f^o (reactants)

H_rxn^o = (moles*H_f^o (NaCl(s)) +(moles *H_f^o (H₂O(l))) -(moles *H_f^o (HCl(g))) -(moles *H_f^o (NaOH(s)))

H_rxn^o = -411.2 kJ/mol -285.8 kJmol + 92.3 kJ/mol + 425.8 kJ/mol = -178.9 kJ/mol

queen_honey_blossom answered 8 months ago

Next > < Previous

Related Solutions

Calculate the standard enthalpy change for the following reaction at 25 °C. H2O(g)+C(graphite)(s) ----> H2(g)+CO(g) deltaH...

Calculate the standard enthalpy change for the following reaction at 25 °C. H2O(g)+C(graphite)(s) ----> H2(g)+CO(g) deltaH rxn=_____kJ

Andrea has been measuring the enthalpy change associated with reaction between HCl and NaOH in a...

Andrea has been measuring the enthalpy change associated with reaction between HCl and NaOH in a coffee cup calorimeter. Andrea combined 45.24 mL of 1.00 M HCl and 26.25 mL of 1.00 M NaOH in a coffee cup calorimeter (mass of the coffee cups + a stir bar = 15.00 g). If the initial temperature of the acid/base solution was 22.08 oC, and the final observed temperature was 39.67 oC, what is the enthalpy change of the neutralization reaction, in...

Michael has been measuring the enthalpy change associated with reaction between HCl and NaOH in a...

Michael has been measuring the enthalpy change associated with reaction between HCl and NaOH in a coffee cup calorimeter. Michael combined 50.77 mL of 1.00 M HCl and 37.83 mL of 1.00 M NaOH in a coffee cup calorimeter; mass of the coffee cups and a stir bar is 15.00 g. If the initial temperature of the acid/base solution was 18.51 oC, and the final observed temperature was 32.06 oC, what is the enthalpy change of the neutralization reaction, in...

Calculate the standard enthalpy of reaction of the following: a. C2H2(g) + O2(g)  2CO(g) +...

Calculate the standard enthalpy of reaction of the following: a. C2H2(g) + O2(g)  2CO(g) + H2O(l) b. NaOH(s) + HCl(g)  NaCl(s) + H2O(l) c. H2SO4(l) + 2 NaOH(s)  Na2SO4(s) + H2O(l)

The standard enthalpy change of combustion [to CO2(g) and H2O()] at 25°C of the organic solid...

The standard enthalpy change of combustion [to CO2(g) and H2O()] at 25°C of the organic solid 1,2-benzenediol, C6H6O2(s), is determined to be -2874.7 kJ mol-1. What is the Hf° of C6H6O2(s) based on this value? Use the following data: Hf° H2O () = -285.83 kJ mol-1 ; Hf° CO2(g) = -393.51 kJ mol-1 ______ kJ mol-1

Calculate the enthalpy change for the reaction: 4 Fe(s) + 3 O2(g) → 2 Fe2O3(s) ...

Calculate the enthalpy change for the reaction: 4 Fe(s) + 3 O2(g) → 2 Fe2O3(s) ΔH°rxn = ? where: 2 Fe(s) + 6 H2O(ℓ) → 2 Fe(OH)3(s) + 3 H2(g) ΔH1° = +321.8 kJ 2 H2O(ℓ) → 2 H2(g) + O2(g) ΔH2° = +571.7 kJ Fe2O3(s) + 3 H2O(ℓ) → 2 Fe(OH)3(s) ΔH3° = +288.6 kJ

1 a) Determine the enthalpy change for the following reaction under standard conditions and 25 °...

1 a) Determine the enthalpy change for the following reaction under standard conditions and 25 ° C: 2Hg (l) + Cl2 (g) → Hg2Cl2 (s) enthalpy for : Hg (l) = 0 Cl2 (g) = 0 Hg2Cl2 (s) = -265.22 b) The entropy change is for the reaction is -182.61 J K-1 mol-1 at standard conditions and 25 ° C. Is the reaction spontaneous under standard conditions and 25 ° C? c) What will be the enthalpy change at 100...

Using the data in Appendix G, calculate the standard enthalpy change for each of the following...

Using the data in Appendix G, calculate the standard enthalpy change for each of the following reactions: A. N2(g) + O2(g) ----> 2NO2(g) B. Si(s) + 2Cl2(g) ------> SiCl4(g) C. Fe2O3(s) + 3 H2(g) -----> 2Fe(s) + 3H2O(l) D. 2LiOH(s) +CO2(g) ------> Li2Co3(s) + H2O

1) Calculate the enthalpy of reaction (ΔHrxn) for the following reaction: Fe2O3(s) + 3 CO(g) →...

1) Calculate the enthalpy of reaction (ΔHrxn) for the following reaction: Fe2O3(s) + 3 CO(g) → 2 Fe(s) + 3 CO2(g) Given: 4 Fe(s) + 3 O2(g) → 2 Fe2O3(s) ΔH = –1648 kJ 2 CO2(g) → 2 CO(g) + O2(g) ΔH = +565.4 kJ 2) Use standard enthalpies of formation to calculate the standard enthalpy of reaction for the following reaction: 2 H2S(g) + 3 O2(g) → 2 H2O(l) + 2 SO2(g) ΔH∘rxn

calculate (a) the standard enthalpy, ( b) the standard Gibbs energy, of the reaction 4NO2(g) +...

calculate (a) the standard enthalpy, ( b) the standard Gibbs energy, of the reaction 4NO2(g) + O2(g) → 2N2O5(g)

Subjects