Question

Worldwide, scientists are working on different options for clean energy to replace the burning of fossil fuels. One option that could potentially be successful is the use of hydrogen gas. This gas can be generated through a reaction between carbon and water L C(s) 2H20(g) -CO2(g) + 2H2(g) AH = ? 1) CO2(g) C(s) + O2(g) AH = 393.5 KJ 2) 2H2O(g) 2H2(g) + O2(g) AH = 483.6 KJ Based on what you have learned in this lab, use the chemical equation and Hess's law to detecoaine the heat.offormationandis.this.aaction.is.Yothermic.or.andotberoic MG 2291 pg IMG 2290 jpo cocx (8).ddocx ChartGo (2) png 199+ Based on what you have learned in this lab, use the chemical equation and Hess's law to determine the heat of formation and if this reaction is exothermic or endothermic. T' T. 0 Words Check Answer Next ChartGo (2) pr dock (8).docx IMG 2290jpg IMG 2291 jpg

Answer 1

Hope you find the answer! X

Answer 2

Answer:

H1 + H2 = -393.5 KJ + 483.6 KJ = 90.1 KJ

Explanation:

Equation 1 must be changed to C(s) + O2 (g) --> CO2 (g) H1 = -393.5 KJ

Equation 2 is in the correct order.

2H2O --> 2H2(g) + O2(g) H2 = 483.6 KJ

Adding the two equations together cancels out the oxygen in equation 1 and 2 to give the desired reaction equation.

H1 + H2 = -393.5 KJ + 483.6 KJ = 90.1 KJ

This means the heat of formation for this reaction gives a positive enthalpy, which makes this reaction endothermic.