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Stoichiometry

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
The heat change for the reaction, C(s) + 2S(s) → CS₂(l), is 104.2 kJ. It represents the heat of

Solution
Formation
Combustion
Fusion

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Stoichiometry
If the pH value of a solution changes by one unit, it implies that hydrogen ion concentration in the solution will change __________ times.

70
10
20
100

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Stoichiometry
In general, the specific heats of aqueous solutions __________ with increase in the concentration of the solute.

Decrease
Increase
Remain unchanged
None of these

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Stoichiometry
Pick out the wrong unit conversion of heat transfer rate.

1 BTU/ft².hr = 2.712 kcal/m².hr
1 Watt = 1.163 kcal/hr
1 kcal/m².hr = 0.3687 BTU/ft².hr = 1.163 Watt/m²
1 kcal/hr= 1.163 Watt

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Stoichiometry
Pick out the correct conversion.

1 BTU =453.6 calories
1 BTU = 252 calories
1 calorie = 252 BTU
1 calorie = 453.6 BTU

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