What Are the Evidences of a Chemical Reaction?

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Evidence of a chemical reaction includes changes in color, temperature, formation of a gas, and the production of a precipitate. Textbooks typically outline these signs as indicators of chemical changes. Participants emphasize the importance of conducting personal research before seeking help. The discussion also suggests that questions related to homework should be posted in the appropriate subforum for better assistance. Engaging with the material independently is encouraged for deeper understanding.
Equilibrium
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Can u tell me what are the evidences of a chemical reaction?
 
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What does your textbook say about this? Have you tried looking for the answer yourself? Do you have any ideas/thoughts?

We can't help you unless you first show some effort. And henceforth, post such questions under the Homework and Coursework subforum.
 
Thread 'Confusion regarding a chemical kinetics problem'

Thread 'Confusion regarding a chemical kinetics problem'

TL;DR Summary: cannot find out error in solution proposed. [![question with rate laws][1]][1] Now the rate law for the reaction (i.e reaction rate) can be written as: $$ R= k[N_2O_5] $$ my main question is, WHAT is this reaction equal to? what I mean here is, whether $$k[N_2O_5]= -d[N_2O_5]/dt$$ or is it $$k[N_2O_5]= -1/2 \frac{d}{dt} [N_2O_5] $$ ? The latter seems to be more apt, as the reaction rate must be -1/2 (disappearance rate of N2O5), which adheres to the stoichiometry of the...
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