For the following reaction occurring in automobiles,the values of $\Delta H, \Delta S, \text{and } \Delta G$ are respectively:
$2C_8H_{18(g)} + 25O_2(g) \rightarrow 16CO_2(g) + 18H_2O(g)$

  • A
    $-, +, -$
  • B
    $+, -, +$
  • C
    $-, -, +$
  • D
    $+, +, -$

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Similar Questions

The difference between the reaction enthalpy change $(\Delta _r H)$ and reaction internal energy change $(\Delta _r U)$ for the reaction $2C_6H_{6(l)} + 15O_{2(g)} \longrightarrow 12CO_{2(g)} + 6H_2O_{(l)}$ at $300 \ K$ is $....$ $J \ mol^{-1}$ $(R = 8.314 \ J \ mol^{-1} \ K^{-1})$

Match the following terms in Column-$I$ with their corresponding descriptions in Column-$II$:
Column-$I$Column-$II$
$(a)$ Adiabatic process$(1)$ Heat
$(b)$ Isolated system$(2)$ At constant volume
$(c)$ Isothermal change$(3)$ First law of thermodynamics
$(d)$ Path function$(4)$ No exchange of matter and energy
$(e)$ State function$(5)$ No heat exchange
$(f)$ $\Delta U = q$$(6)$ Constant temperature
$(g)$ Law of conservation of energy$(7)$ Internal energy
$(h)$ Reversible process$(8)$ $p_{ext} = 0$
$(i)$ Free expansion$(9)$ At constant pressure
$(j)$ $\Delta H = q$$(10)$ Infinitely slow process involving multiple equilibrium states
$(k)$ Intensive property$(11)$ Entropy
$(l)$ Extensive property$(12)$ Pressure,$(13)$ Specific heat

An ideal gas undergoes a reversible cyclic process as shown in the figure. The work done in this process is: (in $,V_1P_1$)

Calculate the work done during the combustion of $0.138 \ kg$ of ethanol,$(C_2H_5OH_{(l)})$ at $300 \ K$. Given: $R = 8.314 \ J \ K^{-1} \ mol^{-1}$ and molar mass of ethanol $= 46 \ g \ mol^{-1}$. (in $J$)

Calculate the work done in $kJ$ when $3$ moles of an ideal gas at $27^{\circ} C$ expand isothermally and reversibly from $10 \ atm$ to $1 \ atm$ $[R=8.314 \ J \ K^{-1} \ mol^{-1}]$

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