Calculate Delta H in kJ for the following rea | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) Given equations:$(i) \ H_2O_{(g)} + C_{(g)} \longrightarrow CO_{(g)} + H_{2(g)} ; \Delta H = +131 \ kJ$$(ii) \ CO_{(g)} + \frac{1}{2} O_{2(g)} \lo

Vedclass · Accepted Answer

$-393$

Vedclass · Answer

(A) Given equations:$(i) \ H_2O_{(g)} + C_{(g)} \longrightarrow CO_{(g)} + H_{2(g)} ; \Delta H = +131 \ kJ$$(ii) \ CO_{(g)} + \frac{1}{2} O_{2(g)} \longrightarrow CO_{2(g)} ; \Delta H = -282 \ kJ$$(iii) \ H_{2(g)} + \frac{1}{2} O_{2(g)} \longrightarrow H_2O_{(g)} ; \Delta H = -242 \ kJ$To find $\Delta H$ for $C_{(g)} + O_{2(g)} \longrightarrow CO_{2(g)}$,add equations $(i)$,$(ii)$,and $(iii)$:$(H_2O_{(g)} + C_{(g)} + CO_{(g)} + \frac{1}{2} O_{2(g)} + H_{2(g)} + \frac{1}{2} O_{2(g)})$ $\longrightarrow (CO_{(g)} + H_{2(g)} + CO_{2(g)} + H_2O_{(g)})$Canceling common species on both sides gives:$C_{(g)} + O_{2(g)} \longrightarrow CO_{2(g)}$The enthalpy change is the sum of the individual enthalpy changes:$\Delta H = (+131) + (-282) + (-242) \ kJ$$\Delta H = 131 - 524 \ kJ = -393 \ kJ$

Similar Questions

Which of the following groups of algae do not have eukaryotic organization?

If $\sigma_1$,$\sigma_2$,and $\sigma_3$ are the conductivities of three conductors,what will be the equivalent conductivity when they are connected in series?

If $f: R \rightarrow R$ is an even function having derivatives of all orders,then which of the following is an odd function?

Which of the following quantities does not depend upon the orbital radius of the satellite?

Ectophloic siphonostele is found in

Vedclass Test Series

Exam Paper Generator

Online Exam Module