Recent content by Triage

same thing happened to me lol

I identified that it was a gp but couldn't knock the answer out. Will this obtain a mark?

for the calculation of purity, I wrote, the sample is 20% impure. Will this receive full marks?

exactly the point.

Lol, they both favour an increase in ammonia. I would upload if I could, don't have a scanner.

a and b both suddenly increase at time T. A goes slightly above and trends down asymptotically. B goes slightly below and trends up asymptotically.

yes but A and B both satisfy that.

I think I agree with this. It is B for nothing else other than the fact that A wouldn't make sense. B requires the least suspension of disbelief lol.

My reasoning was this: Part of Le Chatelier theory is that the system will attempt to counteract the change, but will never fully counteract it. Thus, I found it more likely that it will undershoot it, and thus approach it asymptotically, rather than overshoot it and come down to it.

I got B, maybe I'm wrong.

Oh sorry

1. D 2. A 3. B 4. C 5. C 6. B 7. C 8. B 9. A 10. C 11. A 12. C 13. B 14. D 15. D 16. B 17. A 18. D 19. B 20. D

I disagree. Humans have known for a long time that a fundamental difference exists between nitric acid and say citric acid. That is reflective of a primitive understanding of strong and weak acids that was later clarified by Arrhenius.

yeah? what is wrong with that? D is obvious isn't it?

it is extremely implicit in tests for "common ions." Unless you do not deem nitrates as common ions?