VCE Chemistry Question Thread

[Swagadaktal]

You don't need to know about transcription or translation for VCE Chemistry, and DNA forensics was removed from the SS in 2013.

hey guys, is the production of aspirin/aspirin related questions still in the SD for chem exams?

[blacksanta62]

hey guys, is the production of aspirin/aspirin related questions still in the SD for chem exams?

Yep It's still relevant but I'm not sure if it'll be in the 3/4 course next year
Plus there's a nice aspirin question on last years exam paper (short answer) and they generally ask a question or two on other exams (company and VCAA) but they don't take priority over something like volumetric analysis which will more often than not have at least a 5 mark question in section B

[Elizawei]

hey guys, is the production of aspirin/aspirin related questions still in the SD for chem exams?

Definitely relevant, my teacher says it's the last year it'll be on the SD so if VCAA wants to test aspirin knowledge, there's an extremely high chance they're gonna do it this year

[HopefulLawStudent]

Is aspirin/the production of aspirin the only medicine we need to know for the exam?

[jyce]

Is aspirin/the production of aspirin the only medicine we need to know for the exam?

Yes, the only drug you need to know about in specific detail is aspirin. That's not to say that VCAA couldn't use another drug as an example to assess general concepts (e.g., there was a question a few years back in which they assessed your knowledge of intermolecular bonding and solubility using ibuprofen as an example).

[Apink!]

Hello,

could I ask a question?

If say, an equilibrium has same number of gas molecules on either side, and temperature of the vessel is increased.

Do you think the pressure inside the vessel would be increased, or stay the same?

I thought it will be increased because the high temperature will increase the kinetic energy of gas molecules and so bounce on the surface of the vessel with more force and increase pressure.

But the answer says that pressure will be unchanged.

Can someone explain to me why my thought process was wrong?

Thank you so much!

[zsteve]

Hello,

could I ask a question?

If say, an equilibrium has same number of gas molecules on either side, and temperature of the vessel is increased.

Do you think the pressure inside the vessel would be increased, or stay the same?

I thought it will be increased because the high temperature will increase the kinetic energy of gas molecules and so bounce on the surface of the vessel with more force and increase pressure.

But the answer says that pressure will be unchanged.

Can someone explain to me why my thought process was wrong?

Thank you so much!

Hey!
I'm not sure why pressure would be unchanged
Using the ideal gas equation PV = nRT:
If V is fixed, n is fixed, R is clearly fixed
Then increasing T => increasing P

The only way the pressure could remain unchanged upon temperature increase is if the volume is allowed to increase.

[Apink!]

Hi zsteve,

The question doesn't specify whether the volume is fixed, or whether it got increased. It just says "reaction occurred in a reaction vessel. Find the effect of increasing temperature on pressure"

I guess the answer is wrong. Thank you for helping me!

[jyce]

Hello,

could I ask a question?

If say, an equilibrium has same number of gas molecules on either side, and temperature of the vessel is increased.

Do you think the pressure inside the vessel would be increased, or stay the same?

I thought it will be increased because the high temperature will increase the kinetic energy of gas molecules and so bounce on the surface of the vessel with more force and increase pressure.

But the answer says that pressure will be unchanged.

Can someone explain to me why my thought process was wrong?

Thank you so much!

Pretty confident pressure would increase - not because there would be a greater concentration of gas, but because the particles would be moving faster and therefore applying more pressure on the walls of the container.

[vox nihili]

Pretty confident pressure would increase - not because there would be a greater concentration of gas, but because the particles would be moving faster and therefore applying more pressure on the walls of the container.

Has to go up. PV=nRT therefore pressure is proportional to temperature. You can't change temperature without changing pressure, unless you change another factor in the equation too.

[jyce]

Has to go up. PV=nRT therefore pressure is proportional to temperature. You can't change temperature without changing pressure, unless you change another factor in the equation too.

Agreed.

[Elizawei]

Hey guys,
can benzene be considered as a functional group or nah?

[zsteve]

Hey guys,
can benzene be considered as a functional group or nah?

Yes, I'd say you can. For instance, the phenyl group (-C6H5). However, I'm not sure how much this relates to VCE Chemistry as you basically don't need to do anything with benzene, just be aware that it exists

[blacksanta62]

Yes, I'd say you can. For instance, the phenyl group (-C6H5). However, I'm not sure how much this relates to VCE Chemistry as you basically don't need to do anything with benzene, just be aware that it exists

Is this first year chemistry stuff?
Thank you

[Swagadaktal]

Is this first year chemistry stuff?
Thank you

tbh wouldnt be surprised if it's third year chem stuff coz zSteve is a gun

In all seriousness I think first year involves a lot of naming so probably