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When sugar dissolves es in water is the change in entropy positive or negative?
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∙ 14y ago
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∙ 11y ago
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Will this entropy change by positive or negative N2 (g) 3h2 (g) 2nh3 (g)?
Positive
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.
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
Will this entropy change by positive or negative water heating on a stove?
The entropy, S, will increase with temperature. If there's more kinetic energy in the pot, and the water molecules are flying around faster and faster as a result, there's more chaos and disorder, so a higher value of entropy.
What does negative change in entropy indicate?
The system has become more ordered.
Will this entropy change by positive or negative?
negative
Will this entropy change by positive or negative air is pumped into a tire?
entropy is decreasing, so negative
Will this entropy change by positive or negative frost forms a window pane?
positive
Will this entropy change by positive or negative frost forms on a window pane?
Negative (A+) AG : )
When water freezes should the change in entropy be positive or negative and explain?
Please be aware that the change will be neither positive or negative. You see when "water" freezes the entropy will not change due the tempertaure of the area around it meaning the entropy will stay neutral. You are very welcome young man
Will this entropy change by positive or negative n2 g 3h2 g 2nh3 g?
negative
Will this entropy change by positive or negative N2 (g) 3h2 (g) 2nh3 (g)?
Positive
Why NaCl is very soluble but not CaO is only slightly soluble in water?
Its all to do with enthlapy and entropy. Anything which is soluble usually has a negative standard enthlapy of solution - the energy involved when 1 mole of solute dissolves in a solvent to give an infinately dilute solution. However, NaCl has a slightly positive enthalpy of solution, yet it dissolves. The reason for this is entropy - the change in the amount of disorder. When NaCl dissolves in solution, there is more chaos, more molecules within the solution. Any process that has a large positive entropy change will be favourable - spontaneous and can occur (reaction will 'go'). However, with CaO, the Ca2+ formed in solution has a high affinity (attraction to) for water molecules, hence a lot of water molecules are arranged orderly - less chaos and hence a negative entropy. This should in effect make the compound insoluble, however, the slight solubility is due to it still having a negative enthalpy change of solution - hence despite entropy it is still slightly soluble. (You may be asking how is dissolving CaO possible if entropy is negative? The entropy of the system maybe negative, but the entropy of the surroundings is positive (dissolving gives out heat - exothermic), hence the overall entropy (sum of both entropies) is positive and the reaction will 'go'.
Is Entrophy change in a system that undergoes a spontaneous process positive negative or zero?
Negative entropy is a process or chemical reaction proceeds spontaneously in the forward direction.Positive entropy is a process proceeds spontaneously in reverse.
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.
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
True or False A large positive value of entropy tends to favor products of a chemical reaction?
True, a large positive value of entropy tends to favor products of a chemical reaction. However, entropy can be offset by enthalpy; a large positive value of enthalpy tends to favor the reactants of a chemical reaction. The true measure to determine which side of a chemical reaction is favored is the change in Gibbs' free energy, which accounts for both entropy and enthalpy, as calculated by: Change in Gibbs = Change in Enthalpy - Temp in Kelvin * Change in Entropy A negative value of Gibbs free energy will always favour the products of a chemical reaction.
