if there is an increase in the number of gas molecules , then ^S > 0
In the reaction 2C2H2(g) + 5O2(g) → 4CO2(g) + 2H2O(l), the entropy decreases. This is because the reactants consist of gaseous molecules, which have higher entropy due to their greater freedom of movement, while the products include liquid water, which has lower entropy. Additionally, there is a reduction in the number of gas molecules from 7 (2 C2H2 + 5 O2) to 4 (4 CO2), further contributing to the decrease in disorder. Overall, the transition from gas to liquid and the reduction in the number of gas molecules results in a net decrease in entropy.
A gas released during a chemical reaction is a chemical change.
usually a change in temperature.... OR PRESSURE Which all mean a change in entropy of the system
In this reaction, the solid reactant will undergo a phase change to form a gas as the product. This process typically involves the breaking of intermolecular forces holding the solid structure together, allowing the particles to move more freely and escape into the gas phase. The reaction may involve heating or a change in pressure to facilitate the phase transition.
It happens because, even in the same compound, atoms/molecules in different phases have different types of behaviour. For example, unlike solids, liquid and gas molecules can 'flow' around.
if there is an increase in the number of gas molecules , then ^S > 0
If there is an increase in the number of gas molecules, then S > 0.
Reactions that increase the moles of gas will increase in entropy.
delta s (change in entropy) is positive when.... -you go from a solid to a liquid -you go from a liquid to a gas -when you go from a solid to a gas -when there are more mols of products than mols of reactant the change in entropy is negative when the reverse of the above happens
The entropy increases in this reaction, as the solid reactant (I2(s)) is becoming a gas (I2(g)), which represents a higher degree of disorder and randomness on a molecular level. The increased entropy contributes to the spontaneity of the reaction.
The entropy of the system increases during the sublimation of I2(s) to I2(g) because the randomness and disorder of the gas phase is higher compared to the solid phase. Therefore, the entropy of the reaction is positive.
The entropy increases, as going from a solid to a gas increases disorder or randomness in the system. This is because gases have more freedom of movement and energy compared to solids.
It increases
At high temperature the entropy increase.
It increases; more freely moving particles.
In the reaction 2C2H2(g) + 5O2(g) → 4CO2(g) + 2H2O(l), the entropy decreases. This is because the reactants consist of gaseous molecules, which have higher entropy due to their greater freedom of movement, while the products include liquid water, which has lower entropy. Additionally, there is a reduction in the number of gas molecules from 7 (2 C2H2 + 5 O2) to 4 (4 CO2), further contributing to the decrease in disorder. Overall, the transition from gas to liquid and the reduction in the number of gas molecules results in a net decrease in entropy.
A change in phase (e.g. solid to liquid) typically involves an increase in entropy due to an increase in molecular disorder and freedom of movement. However, entropy changes can vary depending on the specific conditions of the reaction.