On the basis of thermochemical equations (a), (b) and (c), find out which of the algebric relationships given in options (i) to (iv) is correct. (1) C (graphite) + O 2( g ) longrightarrow CO 2( g ) ; Δ rH = x kJ mol -1 (2) C (graphite) +(1/2) O 2( g ) longrightarrow CO ( g ) ; Δ rH = y kJ mol -1 (3) CO ( g )+(1/2) O 2( g ) longrightarrow CO 2( g )

Question

On the basis of thermochemical equations (a), (b) and (c), find out which of the algebric relationships given in options (i) to (iv) is correct. (1) C (graphite) + O 2( g ) longrightarrow CO 2( g ) ; Δ rH = x kJ mol -1 (2) C (graphite) +(1/2) O 2( g ) longrightarrow CO ( g ) ; Δ rH = y kJ mol -1 (3) CO ( g )+(1/2) O 2( g ) longrightarrow CO 2( g ) (A) z = x + y (B) x = y - z (C) x = y + z (D) y = 2z - x

Tardigrade Admin · Accepted Answer

Correct answer is (c) x = y + z

Q. On the basis of thermochemical equations (a),(b) and (c), find out which of the algebric relationships given in options (i) to (iv) is correct. (1) C (graphite) +O2​(g)⟶CO2​(g);ΔrH=xkJmol−1 (2) C (graphite) +21​O2​(g)⟶CO(g);ΔrH=ykJmol−1 (3) CO(g)+21​O2​(g)⟶CO2​(g)

z = x + y

x = y - z

x = y + z

y = 2z - x

Correct answer is (c) x = y + z