Which statement about spontaneous events is not true?

Q6:Which statement about spontaneous events is not true?


a.The rate of the event has nothing to do with whether the event is considered spontaneous.


b.A spontaneous event cannot require energy to proceed.


c.All spontaneous processes have directionality.


d.Energy and a preference for randomness are causes of spontaneous reactions.





Question 4 (Multiple Choice Worth 3.0 points)





Which of the following correctly represents an exothermic reaction?


is it delta H %26lt;0 right????


Any master help me plz!!!! i tie my hand

Which statement about spontaneous events is not true?
"Which of the following correctly represents an exothermic reaction? is it delta H %26lt;0 right????" Yes it is.





"Spontaneous" in thermodynamics means "thermodynamically favourable", even if it happens enormously slowly. For example, the reaction of sugar with oxygen in air is "spontaneous", but you can leave a lump of sugar around indefinitely. So (a) is true.





If the process is spontaneous, the reverse process will be uphill and won't happen. So (c) is true.





It is true that processes in which the system gives out energy (making the surrounds more random), or in which the system itself becomes more random, are for that reason more likely to be spontaneous. So (d) is true.





That leaves (b). So are there any spontaneous events that absorb energy? Yes, certainly; think of ice melting. So (b) is false.