### Question

#### Inconversion oflime-stonetolime,CaCO3(s)→CaO(s)+CO2(g)thevalues ofDHºandDSºare+179.1kJmol–1and160.2J/Krespectivelyat298Kand1bar.AssumingthatDHºandDSºdonotchange withtemperature,temperatureabovewhich conversionoflimestonetolimewillbespontaneous is-

- 1008K
- 1200K
- 845K
- 1118K

#### The correct answer is: 1118K

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### Related Questions to study

#### Consider the reaction:N2+ 3H2→2NH3carried out at constant temperature and pressure. If DH and DU are the enthalpy and internal energy changes for the reaction, which of the following expressions is true ?

#### Consider the reaction:N2+ 3H2→2NH3carried out at constant temperature and pressure. If DH and DU are the enthalpy and internal energy changes for the reaction, which of the following expressions is true ?

#### From an inclined plane two particles are projected with same speed at same angle , one up and other down the plane as shown in figure. Which of the following statements is/are correct?

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Time of flight of is,

Time of flight of is,

So, . The acceleration of both the particles is downwards. Therefore, relative acceleration between the two is zero or relative motion between the two is uniform. The relative velocity of w.r.t. is towards , therefore collision will take place between the two in mid air.

#### If then is

#### If then is

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#### If at 298K the bond energies of C–H,C–C,C=C and H–H bonds are respectively 414,347,615and 435KJmol–1,thevalueofenthalpy change for there action H2C=CH2(g)+H2(g)→CH3–CH3(g)at298 K will be-

#### If at 298K the bond energies of C–H,C–C,C=C and H–H bonds are respectively 414,347,615and 435KJmol–1,thevalueofenthalpy change for there action H2C=CH2(g)+H2(g)→CH3–CH3(g)at298 K will be-

#### If then n=

#### If then n=

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