The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. If, at a total pressure of one standard atm. exerted by the vapours of water and toluene, the mole fraction of water Xw in the vapour phase satisfies

Stoichiometry
The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. If, at a total pressure of one standard atm. exerted by the vapours of water and toluene, the mole fraction of water Xw in the vapour phase satisfies

Xw = 0.5

Xw = 1.0

0.5 < Xw < 1.0

0 < Xw < 0.5

Xw = 0.5

Xw = 1.0

0.5 < Xw < 1.0

0 < Xw < 0.5

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Stoichiometry
If pH value of an acidic solution is decreased from 5 to 2, then the increase in its hydrogen ion concentration is __________ times.

10

10000

1000

100

10

10000

1000

100

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Stoichiometry
Heat of reaction is not influenced by

The physical state (e.g., solid, liquid or gaseous) of reactants and products

Whether the reaction is carried out at constant temperature or constant pressure

None of these

The route/method through which final products are obtained

The physical state (e.g., solid, liquid or gaseous) of reactants and products

Whether the reaction is carried out at constant temperature or constant pressure

None of these

The route/method through which final products are obtained

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Stoichiometry
One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH₄ + 2O₂ → CO₂ + 2H₂O. Both the reactants and products are in gas phase. ΔH°298 = - 730 kJ/mole of methane. If the average specific heat of all the gases/vapour is 40 J/mole.K, the maximum temperature rise of the exhaust gases in °C would be approximately equal to

1525

1225

1335

1735

1525

1225

1335

1735

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Stoichiometry
The net heat evolved or absorbed in a chemical process, i.e. total change in the enthalpy of the system is independent of the

Temperature & pressure

State of aggregation & the state of combination at the beginning & the end of the reaction

None of these

Number of intermediate chemical reactions involved

Temperature & pressure

State of aggregation & the state of combination at the beginning & the end of the reaction

None of these

Number of intermediate chemical reactions involved

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Stoichiometry
What is the simplest formula of a compound containing 50% of element A (atomic weight = 10) and 50% of element B (atomic weight = 20)?

A₂B₃

A₂B

AB₃

AB₂

A₂B₃

A₂B

AB₃

AB₂

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Stoichiometry

Stoichiometry If pH value of an acidic solution is decreased from 5 to 2, then the increase in its hydrogen ion concentration is __________ times.

Stoichiometry Heat of reaction is not influenced by

Stoichiometry The net heat evolved or absorbed in a chemical process, i.e. total change in the enthalpy of the system is independent of the

Stoichiometry What is the simplest formula of a compound containing 50% of element A (atomic weight = 10) and 50% of element B (atomic weight = 20)?

Stoichiometry
If pH value of an acidic solution is decreased from 5 to 2, then the increase in its hydrogen ion concentration is __________ times.

Stoichiometry
Heat of reaction is not influenced by

Stoichiometry
The net heat evolved or absorbed in a chemical process, i.e. total change in the enthalpy of the system is independent of the

Stoichiometry
What is the simplest formula of a compound containing 50% of element A (atomic weight = 10) and 50% of element B (atomic weight = 20)?