A sample of well water contains 140 gm/m³ Ca²⁺ ions and 345 gm/m³ Na⁺ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO₃ in gm/m³ is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16)

Stoichiometry
A sample of well water contains 140 gm/m³ Ca²⁺ ions and 345 gm/m³ Na⁺ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO₃ in gm/m³ is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16)

485

345

140

350

485

345

140

350

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Stoichiometry
The molar composition of a gas is 10% H₂, 10% O₂, 30% CO₂ and balance H₂O. If 50% H₂O condenses, the final mole percent of H₂ in the gas on a dry basis will be be

0.1818

0.05

0.2

0.1

0.1818

0.05

0.2

0.1

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Stoichiometry
S.T.P. corresponds to

760 torr & 0°C

101.325 kPa gauge pressure & 15.5°C

1 atm. absolute pressure & 15.5°C

760 mm Hg gauge pressure & 15.5°C

760 torr & 0°C

101.325 kPa gauge pressure & 15.5°C

1 atm. absolute pressure & 15.5°C

760 mm Hg gauge pressure & 15.5°C

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Stoichiometry
Compressibility factor of a real gas is the ratio of the actual volume to that predicted by ideal gas law. As the pressure of the gas approaches zero, the compressibility factor approaches

∞

0.24

1

∞

0.24

1

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Stoichiometry
Which of the following holds good for a solution obeying Raoult's law (i.e., an ideal solution) (where, ΔH = heat of mixing, and ΔV = volume change on mixing ) ?

ΔH = 1 (+ ve)and Δ V = -ve

Both B and C

ΔH = 0

ΔV = 0

ΔH = 1 (+ ve)and Δ V = -ve

Both B and C

ΔH = 0

ΔV = 0

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Stoichiometry
Raoult's law is not applicable to the

Solutes which dissociate or associate in the particular solution

Both B & C

Concentrated solutions

Solutions containing non-volatile solute

Solutes which dissociate or associate in the particular solution

Both B & C

Concentrated solutions

Solutions containing non-volatile solute

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Stoichiometry

Stoichiometry A sample of well water contains 140 gm/m³ Ca²⁺ ions and 345 gm/m³ Na⁺ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO₃ in gm/m³ is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16)

Stoichiometry The molar composition of a gas is 10% H₂, 10% O₂, 30% CO₂ and balance H₂O. If 50% H₂O condenses, the final mole percent of H₂ in the gas on a dry basis will be be

Stoichiometry S.T.P. corresponds to

Stoichiometry Compressibility factor of a real gas is the ratio of the actual volume to that predicted by ideal gas law. As the pressure of the gas approaches zero, the compressibility factor approaches

Stoichiometry Which of the following holds good for a solution obeying Raoult's law (i.e., an ideal solution) (where, ΔH = heat of mixing, and ΔV = volume change on mixing ) ?

Stoichiometry Raoult's law is not applicable to the

Stoichiometry
A sample of well water contains 140 gm/m³ Ca²⁺ ions and 345 gm/m³ Na⁺ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO₃ in gm/m³ is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16)

Stoichiometry
The molar composition of a gas is 10% H₂, 10% O₂, 30% CO₂ and balance H₂O. If 50% H₂O condenses, the final mole percent of H₂ in the gas on a dry basis will be be

Stoichiometry
S.T.P. corresponds to

Stoichiometry
Compressibility factor of a real gas is the ratio of the actual volume to that predicted by ideal gas law. As the pressure of the gas approaches zero, the compressibility factor approaches

Stoichiometry
Which of the following holds good for a solution obeying Raoult's law (i.e., an ideal solution) (where, ΔH = heat of mixing, and ΔV = volume change on mixing ) ?

Stoichiometry
Raoult's law is not applicable to the