New chat PYQ Library Doubts Rank report

Sign in to see Recents

Sign in to save progress →

Thermodynamics question

2008 · Shift 0 · Q10

Guest · try one question or challengeGuest · try one question or challenge

PYQ Library
JEE Main
Chemistry
Thermodynamics
2008 · Shift 0 · Q10

Thermodynamics question

2008 · Shift 0 · Q10

JEE MainChemistryThermodynamicsMCQ+4 / −1

Oxidising power of chlorine in aqueous solution can be determined by the parameters indicated below:

{1 \over 2}C{l_2}(g)

\xrightarrow{{1 \over 2}{\Delta _{diss}}{H^\Theta }}

Cl(g)\xrightarrow{{\Delta _{eg}}{H^\Theta }} C{l^ - }(g)\xrightarrow{{\Delta _{Hyd}}{H^\Theta }} C{l^ - }(aq)

(Using the data,

{\Delta _{diss}}H_{C{l_2}}^\Theta

= 240 kJ/mol,

{\Delta _{eg}}H_{Cl}^\Theta

= -349 kJ/mol,

{\Delta _{hyd}}H_{C{l^ - }}^\Theta

= - 381 kJ/mol) will be :

A
+152 kJ mol−1
B
−610 kJ mol−1
C
−850 kJ mol−1
D
+120 kJ mol−1

More from Thermodynamics

Standard entropy of $X_{2}$ , $Y_{2}$ and $X Y_{3}$ are 60, 40 and 50 JK−1 mol−1 , respectively. For the reaction, $\frac{1}{2} X_{2}$ + $\frac{3}{2} Y_{2} \to$ $X Y_{3}$ , $Δ H$ = -30 kJ, to be at equilibrium, the temperature will be :2008 · MCQ
Assuming that water vapour is an ideal gas, the internal energy change $(Δ U)$ when $1$ mol of water is vapourised at $1$ bar pressure and $10 0^{\circ} C$ (Given : molar enthalpy of vapourisation of water at $1$ bar…2007 · MCQ
Identify the correct statement regarding a spontaneous process :2007 · MCQ
In conversion of lime-stone to lime, $C a C O_{3}$ (s) $\to$ $C a O$ (s) + $C O_{2}$ (g) the vales of ∆H° and ∆S° are +179.1 kJ mol−1 and 160.2 J/K respectively at 298 K and 1 bar. Assuming that ∆H° do not change with temperature, temperature above…2007 · MCQ
The standard enthalpy of formation $Δ_{f} H^{o}$ at 298 K for methane, $C H_{4}$ (g), is –74.8 kJ mol–1. The additional information required to determine the average energy for C – H bond formation would be :2006 · MCQ
An ideal gas is allowed to expand both reversibly and irreversibly in an isolated system. If Ti is the initial temperature and Tf is the final temperature, which of the following statements is correct?2006 · MCQ
( $Δ H - Δ U$ ) for the formation of carbon monoxide (CO) from its elements at 298 K is : (R = 8.314 J K–1 mol–1)2006 · MCQ
The enthalpy changes for the following processes are listed below : $C l_{2}$ (g) = 2 $C l$ (g), 242.3 kJ mol–1 $I_{2}$ (g) = 2 $I$ (g), 151.0 kJ mol–1 $I C l$ (g) = $I_{2}$ (g) + $C l$ (g), 211.3 kJ mol–1 $I_{2}$ (s) = $I_{2}$ (g), 62.76 kJ mol–1 Given that the…2006 · MCQ