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Stoichiometry

Stoichiometry
The molecular velocity of a real gas is proportional to (where, T = absolute temperature of the gas).

√T
T
T²
1/√T

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Stoichiometry
The combustion equations of carbon and carbon monoxide are as follows: C + O₂ = CO₂, ΔH = - 394 kJ/kg . mole CO + 1/2 O₂ = CO₂, ΔH = - 284.5 kJ/kg. mole. The heat of formation of CO is __________ kJ/kg. mole.

-109.5
+180
+100
+109.5

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Stoichiometry
With increase in the temperature of pure (distilled) water, its

POH and pH both 4ecreases
PH decreases and pOH increases
POH decreases and pH increases
PH and pOH both increases

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Stoichiometry
The maximum adiabatic flame temperature of fuels in air is __________ the maximum flame temperature in pure oxygen.

Same as
Not related to
Higher than
Lower than

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Stoichiometry
Vapor pressure of water at 100°C is about __________ bar.

1.013
10.13
0.1013
101.3

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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.

1000
10
100
10000

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