1

JEE Main 2021 (Online) 1st September Evening Shift

Numerical

+4

-1

For the reaction, 2NO

_{2}(g) $$\rightleftharpoons$$ N_{2}O_{4}(g), when $$\Delta$$S = $$-$$176.0 JK^{$$-$$1}and $$\Delta$$H = $$-$$57.8 kJ mol^{$$-$$1}, the magnitude of $$\Delta$$G at 298 K for the reaction is ___________ kJ mol^{$$-$$1}. (Nearest integer)Your input ____

2

JEE Main 2021 (Online) 27th August Evening Shift

Numerical

+4

-1

Two flasks I and II shown below are connected by a valve of negligible volume.

When the valve is opened, the final pressure of the system in bar is x $$\times$$ 10

[Assume - Ideal gas; 1 bar = 10

When the valve is opened, the final pressure of the system in bar is x $$\times$$ 10

^{$$-$$2}. The value of x is __________. (Integer answer)[Assume - Ideal gas; 1 bar = 10

^{5}Pa; Molar mass of N_{2}= 28.0 g mol^{$$-$$1}; R = 8.31 J mol^{$$-$$1}K^{$$-$$1}]Your input ____

3

JEE Main 2021 (Online) 27th August Evening Shift

Numerical

+4

-1

Data given for the following reaction is as follows :

FeO

The minimum temperature in K at which the reaction becomes spontaneous is ___________. (Integer answer)

FeO

_{(s)}+ C_{(graphite)}$$\to$$ Fe_{(s)}+ CO_{(g)}Substance | $$\Delta H^\circ $$ (kJ mol$$^{ - 1}$$) |
$$\Delta S^\circ $$ (J mol$$^{ - 1}$$ K$$^{ - 1}$$) |
---|---|---|

$$Fe{O_{(s)}}$$ | $$ - 266.3$$ | 57.49 |

$${C_{(graphite)}}$$ | 0 | 5.74 |

$$F{e_{(s)}}$$ | 0 | 27.28 |

$$C{O_{(g)}}$$ | $$ - 110.5$$ | 197.6 |

The minimum temperature in K at which the reaction becomes spontaneous is ___________. (Integer answer)

Your input ____

4

JEE Main 2021 (Online) 27th August Morning Shift

Numerical

+4

-1

200 mL of 0.2 M HCl is mixed with 300 mL of 0.1 M NaOH. The molar heat of neutralization of this reaction is $$-$$57.1 kJ. The increase in temperature in $$^\circ$$C of the system on mixing is x $$\times$$ 10

[Given : Specific heat of water = 4.18 J g

[Assume no volume change on mixing)

^{$$-$$2}. The value of x is ___________. (Nearest integer)[Given : Specific heat of water = 4.18 J g

^{$$-$$1}K^{$$-$$1}, Density of water = 1.00 g cm^{$$-$$3}][Assume no volume change on mixing)

Your input ____

Questions Asked from Thermodynamics (Numerical)

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