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Stoichiometry

Stoichiometry
The OH⁻ concentration in a solution having pH value 3 is

10-10
10-11
10-3
10-13

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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 ) ?

ΔV = 0
Both B and C
ΔH = 0
ΔH = 1 (+ ve)and Δ V = -ve

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Stoichiometry
1 kgf/cm² is not equal to

1 bar
10000 mm wc
100 KPa = 100 000 N/m²
1 torr

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Stoichiometry
'Cox' chart which is useful in the design of a distillation column (particularly suitable for petroleum hydrocarbons) is a plot of the

Log (temperature) vs. log (vapor pressure)
Vapor pressure vs. temperature
Vapor pressure vs. log (temperature)
Temperature vs. log (vapor pressure)

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Stoichiometry
Heat of transition is the heat evolved or absorbed, when a substance is converted from

Vapor to liquid
Solid to liquid
One allotropic form to another allotropic form
Vapor to solid

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Stoichiometry
A compound was found having nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. The formula of the compound is

N₂O₄
N₂O₃
N₂O₅
None of these

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