Home
Class 11
CHEMISTRY
what is entropy change for reaction 2H2(...

what is entropy change for reaction 2H2(g) + O2 (g) -----?2H2O(l). Standard entropies of H2(g) , O2(g) and H2O(l) are 126.6, 201.20,68.0 J/k mol respectively

Text Solution

AI Generated Solution

To calculate the entropy change (ΔS) for the reaction: \[ 2H_2(g) + O_2(g) \rightarrow 2H_2O(l) \] we will use the standard entropies of the substances involved in the reaction. The standard entropies provided are: - \( S_{H_2(g)} = 126.6 \, \text{J/K·mol} \) - \( S_{O_2(g)} = 201.20 \, \text{J/K·mol} \) ...
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS

    ICSE|Exercise REVIEW EXERCISES (Fill in the blanks )|6 Videos
  • CHEMICAL THERMODYNAMICS

    ICSE|Exercise VERY SHORT ANSWER TYPE QUESTIONS |56 Videos
  • CHEMICAL THERMODYNAMICS

    ICSE|Exercise NCERT TEXT-BOOK. EXERCISES|22 Videos
  • CHEMICAL BONDING AND MOLECULAR STRUCTURE

    ICSE|Exercise NCERT TEXT-BOOK EXERCISES ( WITH HINTS AND SOLUTIONS)|47 Videos
  • CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

    ICSE|Exercise NCERT TEXT-BOOK. EXERCISE (With Hints and Solutions)|63 Videos

Similar Questions

Explore conceptually related problems

Determine the entropy change for the reaction 2H_(2)(g) +O_(2)(g) rarr 2H_(2)O(l) at 300K . If standard entropies of H_(2)(g),O_(2)(g) and H_(2)O(l) are 12.6, 201.20 and 68.0 J K^(-1) "mole"^(-1) respectively.

Determine the entropy change for the reaction given below: 2H_(2)(g) +O_(2)(g) rarr 2H_(2)O(l) at 300K . If standard entropies of H_(2)(g), O_(2)(g) , and H_(2)O(l) are 126.6, 201.20 , and 68.0 J K^(-1) mol^(-1) , respectively.

Calculate the enthalpy change for the reaction H_2(g) + 1/2 O_2(g) to H_2O (g) if the bond energies of H - H,O = O and O - H bonds are 104, 118 and 11 kcal mol^(-1) respectivley.

Change in enthalpy for reaction 2H_(2)O_(2)(l)rarr2H_(2)O(l)+O_(2)(g) if heat of formation of H_(2)O_(2)(l) and H_(2)O(l) are -188 and -286KJ//mol respectively is

Calculate the standard enthalpy change for the reaction CH_4 (g) + 2O_2(g) to CO_2(g) + 2H_2O(l) , given that the standard heatds of formation of CH_4(g, CO_2(g) and H_2O (l) are -74.91 mol^(-1), -394.12 kJ mol^(-1) and -286.31 kJ mol^(-1) respectivley.

Calculate the change in entropy (Delta_rS^o) at 298 K for the reaction in which urea is formed from NH_3 and CO_(2) 2NH_3(g)+CO_2(g)rightarrow NH_2CONH_2 + H_2O . The standard entropy of NH_(2)CONH_(2)(aq),CO_2(g),NH_3(g) and H_2O(l) are 174.0, 213.7, 195 and 75 JK^-1mol^-1 respectively

Calculate the standard enegry change for the reaction: OF_(2)(g) +H_(2)O(g) rarr O_(2)(g) +2HF(g) at 298K The standard enthalpies of formation of OF_(2)(g), H_(2)O(g) , and HF(g) are +20, -250 , and -270 kJ mol^(-1) , respectively.

H_2(g) + 1/2 O_2(g) to H_2O (l), DeltaH = - 286 kJ 2H_2(g) + O_2(g) to 2H_2O (l), DeltaH = …kJ

In the reaction 2H_(2)(g) + O_(2)(g) rarr 2H_(2)O (l), " "Delta H = - xkJ

19 gm of ice is converted into water at 0^(@)C and 1 atm. The entropies of H_(2)O(s) and H_(2)O(l) are 38.2 and 60 J//"mol " K respectively. The enthalpy change for this conversion is :