Given that:2C_{(s)} + 2O_{2(g)} to 2CO_{2(g)} | vedclass

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

Question

(D) The target reaction for the formation of acetylene is: $2C_{(s)} + H_{2(g)} 	o C_2H_{2(g)}$.Let the given equations be:$(i) 2C_{(s)} + 2O_{2(g)}

Vedclass · Accepted Answer

$+228$

Vedclass · Answer

(D) The target reaction for the formation of acetylene is: $2C_{(s)} + H_{2(g)} 	o C_2H_{2(g)}$.Let the given equations be:$(i) 2C_{(s)} + 2O_{2(g)} 	o 2CO_{2(g)}; \Delta H_1 = -787 \ kJ$$(ii) H_{2(g)} + 0.5 O_{2(g)} 	o H_2O_{(l)}; \Delta H_2 = -286 \ kJ$$(iii) C_2H_{2(g)} + 2.5 O_{2(g)} 	o 2CO_{2(g)} + H_2O_{(l)}; \Delta H_3 = -1301 \ kJ$To obtain the target reaction,perform the operation: $(i) + (ii) - (iii)$.$\Delta H_f = (-787) + (-286) - (-1301)$$\Delta H_f = -1073 + 1301 = +228 \ kJ$.

Given that:
$2C_{(s)} + 2O_{2(g)} \to 2CO_{2(g)}; \Delta H = -787 \ kJ$
$H_{2(g)} + 1/2 O_{2(g)} \to H_2O_{(l)}; \Delta H = -286 \ kJ$
$C_2H_{2(g)} + 2.5 O_{2(g)} \to 2CO_{2(g)} + H_2O_{(l)}; \Delta H = -1301 \ kJ$
Calculate the heat of formation of acetylene $(C_2H_{2(g)})$ in $kJ$.

Similar Questions

$A$ diverging lens with a focal length of magnitude $25 \, cm$ is placed at a distance of $15 \, cm$ from a converging lens with a focal length of magnitude $20 \, cm$. $A$ beam of parallel light falls on the diverging lens. The final image formed is:

Water falls from a height of $60\,m$ at the rate of $15\,kg/s$ to operate a turbine. The losses due to frictional forces are $10\%$ of energy. How much power is generated by the turbine in $kW$ $(g = 10\,m/s^2)$?

An ovule which becomes curved so that the nucellus and embryo sac lie at right angles to the funicle is:

Two sides of a triangle are given by the roots of the equation $x^2-5x+6=0$ and the angle between the sides is $\frac{\pi}{3}$. Then,the perimeter of the triangle is

The weight of a molecule of the compound $C_{60}H_{122}$ is

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Given that:$2C_{(s)} + 2O_{2(g)} \to 2CO_{2(g)}; \Delta H = -787 \ kJ$$H_{2(g)} + 1/2 O_{2(g)} \to H_2O_{(l)}; \Delta H = -286 \ kJ$$C_2H_{2(g)} + 2.5 O_{2(g)} \to 2CO_{2(g)} + H_2O_{(l)}; \Delta H = -1301 \ kJ$Calculate the heat of formation of acetylene $(C_2H_{2(g)})$ in $kJ$.