Sulfur trioxide (S03) can be produced using the reversible reaction shown. Which change would keep this reaction from shifting to form more of the
product?
2SO2 +02=
2SO3 + energy
A. Decreasing the pressure in the reaction vessel
B. Removing the product from the reaction vessel as it forms
C. Increasing the pressure in the reaction vessel
D. Decreasing the temperature in the reaction vessel

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

your answer is c) plasma

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