Question 17 (1 point) What is the reaction for the standard enthalpy of formation for HCl(g)?...
O NH3(g) + Cl2(g) - NH2Cl(g) + HCl(g) 1/2 H2(g) + 1/2Cl2(g) → HCl(g) Question 18 (1 point) A piece of iron (mass = 25.0 g) at 398 K is placed in a styrofoam coffee cup containing 25.0 mL of water at 298 K. Assuming that no heat is lost to the cup or the surroundings, what will the final temperature of the water be? The specific heat capacity of iron = 0.449 J/gºC and water = 4.18 J/gºC. 308...
1/2 H2(g) + 1/2012(g) - HCl(g) Question 18 (1 point) A piece of iron (mass = 25.0 g) at 398 K is placed in a styrofoam coffee cup containing 25.0 mL of water at 298 K. Assuming that no heat is lost to the cup or the surroundings, what will the final temperature of the water be? The specific heat capacity of iron = 0.449 J/gºC and water = 4.18 J/gºC. 308 K 348 K 325 K 287 K 388...
A scientist measures the standard enthaply change for the following reaction to be 80.4kJ NH4Cl(aq)=NH3(g)+HCl(aq) Based on this value and the standard enthalpies of formation for the other substances, the standard enthaply of formation of HCl (aq) Use the References to access important values if needed for this question A scientist measures the standard enthalpy change for the following reaction to be 80.4 kJ. NH Cl(aq) +NH (9) + HCl(aq) G Based on this value and the standard enthalpies of...
1. A scientist measures the standard enthalpy change for the following reaction to be -2913.0 kJ: 2C2H6(g) + 7 O2(g)->4CO2(g) + 6 H2O(g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of H2O(g) is kJ/mol. 2. A scientist measures the standard enthalpy change for the following reaction to be -138.6 kJ : H2(g) + C2H4(g)->C2H6(g) Based on this value and the standard enthalpies of formation for the other substances, the...
Il. Results The objective of this experiment is to calculate the enthalpy of foermation for NH.CKs) (Reminder-beat of formation is the ΔΗ for the formation of one mole of a compound from the elements.) Write the balanoed chemical equation for the formation of 1 mole ot NILC1(S) from the elements Na (g). H: (B) and Clh (g. EQUATION (3): Use the two following equations and Equations (1) and (2), sound previously, to calculate the enthalpy formation for NIH.CI(s). Apply Hess's...
Which thermochemical equation gives the value of the standard enthalpy of formation for NH4C104(s)? N(g) + 2 H2(g) + CI(g) + 2 O2(g) ---> NH4C104(s) N(g) + 2 H2(g) + Cl2(1) +2 O2(g) ---> NH4C104() 1/2 N2(g) + 2 H2(g) + 1/2 C12(g) + 2 O2(g) ---> NH4C104(s) N(g) + 4 H(g) + Cl(g) + 4 0(g) ---> NH4C104(8) ON(g) + 2 H2(g) + C1(g) + 2 02(9) ---> NH4C104(s) ON(g) + 2 H2(g) + C12(1) + 2 02(E) --->...
Question 17 1 pts 17. According to the definition of standard enthalpy of formation, AH, which of the following's AH is zero? O OH(aq) Hg(s) Al(s) NaCl(s) Hez(g) 1 pts D Question 18 18. Given the data in the table below, calculate the AHørxn (kJ) for the reaction 4NH3(g) + 5O2 (g) - 4NO (g) + 6H20 (1)
The standard enthalpy of formation of NH3(g) is – 46.11 kJ/mol. What is A Hº for the following reaction? NH3(g) — N2(g) + H2(g) 4,Hº =
Using standard heats of formation, calculate the standard enthalpy change for the following reaction. H2(g) + Cl2(g)—>2HCI(g) ANSWER: kJ Using standard heats of formation, calculate the standard enthalpy change for the following reaction. 2H20(1)——2H2(g) + O2(g) ANSWER: kJ
A scientist measures the standard enthalpy change for this reaction to be - 172.0 kJ/mol: HCl(g) + NH3(g) →NH CH(s) Based on this value and the standard formation enthalpies for the other substances, the standard formation enthalpy of HC (g) is kJ/mol Submit Answer Retry Entire Group 2 more group attempts remaining