Can the volume change during chemical reactions if the state of matter does not change?
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What are the isomers called?
I don't understand it at all. What do you call them? Is the approach correct?
Why the sudden increase?
Why is there a sudden increase in both acids in the graph? Here is the task (SPARKvue is the program for measuring the pH value): Pipette 10 ml of the respective acid (hydrochloric acid or acetic acid) into a 100 ml beaker and fill to 80 ml with distilled water. The beaker is placed on…
Of course. See e.g. 2 NO2 <-> N2O4
Yep, that was stupid. I also think it’s about closed systems. I don’t have a 100% look at how to notice
You can also make this reaction in a closed system. It’s even easier. Look at the equation:
pV = nRT
If you increase a variable, you automatically need to get another smaller. Thus, if you increase the volume V, either the pressure must be smaller or one of the right variables (n, R and T) larger. What happens depends on reaction and exact conditions. Can also be a combination of several.
This helps, thanks
This has to do with what is going on for products and rather less with the energy of the reaction
I have another question. If, for example, potassium oxide reacts with hydrogen to form potassium and water, the heat of reaction is positive (i.e. endothermic reaction?), then why do the aggregates g and g change to s and l? I know it from the middle stage so that gas, when it becomes colder, becomes liquid/solid, or rather differently, that a solid substance becomes liquid/gas-shaped on heat. So why does the aggregate state change in the manner of a reaction? Does this have something to do with the activation energy that is somehow not included in the heat of reaction or do I misunderstand the heat of reaction?
The volume changes whenever the temperature changes.
True yes 🤦 thanks
Not so fast, it doesn’t have to be. Only the pressure can change and the volume remains the same.
No, that’s why I don’t think this knowledge is expected of me. But thanks for the help 😉
It can be emphasised. It doesn’t have to. There is also an equation for this: pV = nRT if you say what
Yes. I’m just sitting on homework and it’s just going to list normal reactions where I need to arrange reaction heat and volume work +/-. This means that the volume can get bigger, right?
yes, there are several possibilities:
In gas reactions, a plurality of particles of one can become or vice versa.
In liquids, another liquid with a different density can be formed. the effect is significantly lower.
In the case of solids there is virtually no detectable effect, except for the temperature.
m.f.G.
present