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Reactions that increase the moles of gas will increase in entropy.
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∙ 6y ago
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How does an endothermic reaction change the entropy of the surroundings?
Endothermic reactions take in energy from the surrounding so I think the entropy decreases.
Which would represent an increase in entropy?
thawing
What describes the entropy change of gas reaction?
if there is an increase in the number of gas molecules , then ^S > 0
Which of the following describes the entropy change of a gas reaction?
If there is an increase in the number of gas molecules, then S > 0.
Under what condition can entropy decrease in a system?
First of all, entropy is the defined as the extent to which something is disordered. In chemistry, for entropy in a SYSTEM to decrease, the products of a reaction must be less disordered than the reactants. The extent of "disordered-ness" can be seen by the physical states of the substances. A gas is more disordered than a liquid, which is more disordered than a solid. So, an example of a reaction that leads to a decrease in entropy is: HCl(gas) +NH3(gas) -----> NH4Cl(solid) So you see, there are more gaseous molecules in the reactant side of the equation than in the product side, which means the products are less disordered than the reactants. ----------------------------------------------- However, one must note that if the entropy of a system(reaction) decreases, the entropy of the surroundings should increase. This is because change in TOTAL entropy(A) = change in entropy of SYSTEM(B) + change in entropy of SURROUNDINGS(C). It is a rule that A must increase in every case ( have a positive value). If the B is negative(a decrease in entropy), C must be positive(an increase in entropy) to keep the value of A positive.
Do chemical reactions that increase entropy tend to occur spontaneously?
Reactions that increase the randomness. Reactions that have more moles of gas on the product side than the reactant side increase entropy. Also reactions that have a positive change in spontaneity and a negative enthalpy.
Wich reactions would have an increase in entropy?
A gas typically increases the entropy much more than the increase in moles.
How does an endothermic reaction change the entropy of the surroundings?
Endothermic reactions take in energy from the surrounding so I think the entropy decreases.
Which would represent an increase in entropy?
thawing
What describes the entropy change of gas reaction?
if there is an increase in the number of gas molecules , then ^S > 0
Which of the following describes the entropy change of a gas reaction?
If there is an increase in the number of gas molecules, then S > 0.
What has the reactions would have an increase in entropy?
entropy is a measure of disorder entropy increases for example from solid --> liquid or liquid --> gas or solid --> gas or liquid --> aqueous when the particles become more "free" and there are more spaces between them that means that the entropy has increased
What happens to the entropy in the reaction?
Entropy increases. In a reaction comprised of sub-reactions, some sub-reactions may show a decrease in entropy but the entire reaction will show an increase of entropy. As an example, the formation of sugar molecules by living organisms is a process that shows decrease in entropy at the expense of the loss of entropy by the sun.
Under what condition can entropy decrease in a system?
First of all, entropy is the defined as the extent to which something is disordered. In chemistry, for entropy in a SYSTEM to decrease, the products of a reaction must be less disordered than the reactants. The extent of "disordered-ness" can be seen by the physical states of the substances. A gas is more disordered than a liquid, which is more disordered than a solid. So, an example of a reaction that leads to a decrease in entropy is: HCl(gas) +NH3(gas) -----> NH4Cl(solid) So you see, there are more gaseous molecules in the reactant side of the equation than in the product side, which means the products are less disordered than the reactants. ----------------------------------------------- However, one must note that if the entropy of a system(reaction) decreases, the entropy of the surroundings should increase. This is because change in TOTAL entropy(A) = change in entropy of SYSTEM(B) + change in entropy of SURROUNDINGS(C). It is a rule that A must increase in every case ( have a positive value). If the B is negative(a decrease in entropy), C must be positive(an increase in entropy) to keep the value of A positive.
What changes a liquid or a solid to a gas?
usually a change in temperature.... OR PRESSURE Which all mean a change in entropy of the system
How do you predict delta s?
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
Is it possible for entropy to be negative and For entropy change to be negative and For entropy production to be negative?
Assuming you mean can entropy be reduced; the answer is yes. Only in an open system such as our planet. The universe is a closed systems. The entropy of the universe cannot be reduced. Chemical changes can reduced entropy in an open system. When gas turns into a liquid or when a liquid turns into a solid; entropy is reduced.
