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Stoichiometry

Stoichiometry
If 1 Nm³ of O₂ contains 'N' number of molecules, then number of molecules in 2Nm³ of SO₂ will be

N
4N
N/2
2N

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Stoichiometry
An aqueous solution of 2.45% by weight H₂SO₄ has a specific gravity of 1.011. The composition expressed in normality is

0.2528
0.5055
0.5
0.25

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Stoichiometry
Saturated solution of benzene in water is in equilibrium with a mixture of air and vapours of benzene and water at room temperature and pressure. Mole fraction of benzene in liquid is xB and the vapour pressures of benzene and water at these conditions are PvB and Pvw respectively. The partial pressure of benzene in air-vapour mixture is

XB.Patm
XB.PvB
(Patm - Pvw)xB
PvB

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Stoichiometry
For a reacation, X → Y, if the concentration of 'X' is tripled; the rate becomes nine times. The order of reaction is

3
1
2

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Stoichiometry
A reduction process is accompanied with increase in the

Both A & B
Neither A nor B
Oxidation number
Number of electrons

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Stoichiometry
In physical adsorption, as compared to chemisorption, the

Heat of adsorption is very large
Activation energy is very high
Rate of adsorption is controlled by the resistance to surface reaction
Quantity adsorbed per unit mass is higher

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