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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.

1000
10000
100
10

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Stoichiometry
The vapor pressure of liquids (having similar chemical nature) at any specified temperature __________ with increasing molecular weight.

Increases linearly
Decreases
Remains unchanged
Increases

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Stoichiometry
The effect of pressure on the heat capacity of the gases __________ is negligible.

At pressure below one atmosphere
Both A & B
Neither A nor B
Below the critical temperature

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Stoichiometry
The total volume occupied by a gaseous mixture is equal to the sum of the pure component volumes. This is the __________ law.

Avogadro's
Dalton's
GayLussac's
Amgat's

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Stoichiometry
A rigid vessel containing three moles of nitrogen gas at 30°C is heated to 250°C. Assume the average capacities of nitrogen to be Cp = 29.1 J/mole.°C and, Cv = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is

13728 J
12712 J
4576 J
19206 J

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Stoichiometry
Pick out the wrong unit conversion of temperature.

°F = (°C + 17.778) x 1.8
°C = (F- 32) x 0.555
Temperature difference of 1°K = 1°C = 9/5 °F
°R = 273 + °F

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