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How does the entropy change in the reaction 2C3H6 (g) plus 9O (g) 6CO2(g)?
The entropy increase in this reaction.
How does the entropy change in the reaction 2C2H2(g) plus 5O2(g) 4CO2(g) plus 2H2O(l)?
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.
Is carbon dioxide plus water to glucose plus oxygen a chemical change?
Yes, this is a chemical reaction.
What will have a decrease in entropy 2so3(g) 2so2(g)o2(g) 2h2o(g) 2h2(g) plus 02(g) 2nh3(g) n2(g) plus 3h2(g) 2no2(g) n2o4(g)?
To determine which reaction has a decrease in entropy, we look at the change in the number of gas molecules. A decrease in entropy typically occurs when the number of gas molecules decreases from reactants to products. Among the reactions provided, the formation of ( \text{N}_2\text{O}_4(g) ) from ( 2\text{NO}_2(g) ) results in a decrease in the total number of gas molecules (from 2 moles of ( \text{NO}_2 ) to 1 mole of ( \text{N}_2\text{O}_4 )), indicating a decrease in entropy.
Is copper sulfate CuSO4 plus iron Fe a physical or chemical change?
Yes, this is a chemical reaction.
How does the entropy change in the reaction 2C3H6 (g) plus 9O (g) 6CO2(g)?
The entropy increase in this reaction.
How does the entropy change in the reaction 2C2H2(g) plus 5O2(g) 4CO2(g) plus 2H2O(l)?
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.
Which of the following reactions would result in decreased entropy A PCl5 g PCl2 g plus Cl2 g B 2CH4 g plus 3O2 g 2CO g plus 4H2O g C N2 g plus 3H2 g 2NH3 g D MgCl2 s Mg2 plus aq plus 2Cl aq-?
Reaction D would result in decreased entropy, as the solid reactant (MgCl2) is breaking into ions in solution, which typically decreases entropy. The other reactions involve gases as reactants or products, which generally increase entropy due to higher degrees of freedom in gaseous states.
Which of the following reactions would result in decreased entropy A PCl5 g PCl2 g plus Cl2 g B 2CH4 g plus 3O2 g 2CO g plus 4H2O g C N2 g plus 3H2 g 2NH3 g D MgCl2 s Mg2 plus aq plus 2Cl aq?
An example of a reaction that would result in decreased entropy is a dehydration reaction.
How If a reaction occurs at 293 K that has a change in enthalpy of plus 125 kJ and a change in entropy of plus 35 J K then is the reaction spontaneous If so why If not why not?
A process will be spontaneous when the change in Gibbs free energy is negative.The change in Gibbs free energy can be calculated from the equation:G2 - G1 = H2 - H1 - T(S2 - S1)whereG is Gibbs free energyH is EnthalpyT is absolute temperature (when T is given in Kelvin or Rankine it is an absolute temperature)S is EntropyIn this caseH2 - H1 = 125 kJT = 293 KS2 - S1 = 35 J/K = 0.035 kJ/Kso doing the math you getG2 - G1 = 125 - 293(0.35) = 22.45 > 0 so the process is not spontaneous in the direction where enthalpy change and entropy change are being measured. The reverse process would be spontaneous.
Is carbon dioxide plus water to glucose plus oxygen a chemical change?
Yes, this is a chemical reaction.
What type of reaction does Sn 2 plus - Sn 4 plus represent?
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What is the entropy change for the third reaction below N2(g) plus O2(g) 2NO(g) and 8710H 180 kJ 2NO2(g) 2NO(g) plus O2(g) and 8710H 112 kJ N2(g) plus 2O2(g) 2NO2(g)?
The equation is: N2(g) + 2O2(g) -> 2NO2(g) Given enthalpy changes: 2NO(g) + O2(g) + 112 kJ -> 2NO2(g) N2(g) + O2(g) -> 2NO(g) + 180 kJ Using Hess's Law, we subtract the second equation from the sum of the first and third equations: 2NO2(g) - (2NO(g) + O2(g)) = 2NO2(g) - 2NO(g) - O2(g), resulting in the entropy change for the third reaction.
What will have a decrease in entropy 2so3(g) 2so2(g)o2(g) 2h2o(g) 2h2(g) plus 02(g) 2nh3(g) n2(g) plus 3h2(g) 2no2(g) n2o4(g)?
To determine which reaction has a decrease in entropy, we look at the change in the number of gas molecules. A decrease in entropy typically occurs when the number of gas molecules decreases from reactants to products. Among the reactions provided, the formation of ( \text{N}_2\text{O}_4(g) ) from ( 2\text{NO}_2(g) ) results in a decrease in the total number of gas molecules (from 2 moles of ( \text{NO}_2 ) to 1 mole of ( \text{N}_2\text{O}_4 )), indicating a decrease in entropy.
Which pair of terms best describes the type of change that occurred in the reaction hydrogen plus oxygen leads to water plus energy?
Chemical change and exothermic. In this reaction, hydrogen and oxygen undergo a chemical change to form water, releasing energy in the form of heat and light.
Is magnesium plus oxygen a chemical or physical change?
The reaction between magnesium and oxygen to form magnesium oxide is a chemical change. This is because new substances with different properties are formed during the reaction.
Is copper sulfate CuSO4 plus iron Fe a physical or chemical change?
Yes, this is a chemical reaction.
