Chemistry, 28.12.2019 22:31 mojio22

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a reaction will only be spontaneous if the change in enthalpy is more negative than the product of −tδs is positive.

true

false
2 points
question 26
which of the following will favor a spontaneous change?
+δh
−δh
+δs
−δs

i only

ii and iv

iii only

ii and iii
3 points
question 27
according to collision theory, the greater number of effective collisions that occur between reactant particles per second, the greater the rate of reaction.

true

false
2 points
question 28
pulverizing a solid reactant from chunks into a powder can affect the rate of the chemical reaction.

true

false
2 points
question 29
explain how changing the surface area of a solid can affect the rate of reaction.

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words: 0
5 points
question 30
in an energy diagram for an exothermic chemical reaction, the total energy change is the difference in energy between the energy of the reactants and the energy of the products.

true

false

Answers: 1

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