Transient Balances for Engineers

[@chemicalengineeringbd7614]

thank you thats a great video may Allah bless you 🥰

[@weihern9741]

this is very very helpful!! Thanks so much! It is better if you provide the solution right after the question rather than link to other video

[@apm]

Great suggestion.

[@hanswurst1724]

Can you Do a material an energy balance for water electrolysis, please?

[@apm]

Here is a link to help you: apmonitor.com/pdc/index.php/Main/PhysicsBasedModels

[@punkbuff96emoslipkno]

Hi Im dealing with NaCl soln where there is no output and the input is pure water for 10L/min. When Im doing the balance the output is zere and how do i do the input? Should I solve using the volumetric flowrate of the pure water? The question ask to do mole balance on NaCl. Thank you in advance!

[@apm]

It would be something like V * d(c_NaCl)/dt = q * (c_NaCl_in) - q * (c_NaCl) with q as volumetric flowrate and V as the volume. It comes from Accumulation = In - Out for the moles of NaCl. You would need to solve this differential equation for c_NaCl (outlet concentration) with a zero concentration input. You should have a non-zero initial condition for c_NaCl. The solution should be something like c_NaCl(t) = exp(-t*q/V) * c_NaCl_0 for your solution where c_NaCl_0 is the initial concentration.

[@sfindaa8523]

Thanks for this video. How did you come up with 0.27 percent for yO2 in the end? if I added the moles of o2 in n and moles of o2 in n(.) and divide by the total volume, I got .30. But if I just did and average (.35+.21)/2, I got 0.28. I have an exam today...

[@sfindaa8523]

+Briste Belle Ohhhh! never mind! I didn't see the last part of the question. Thanks for the video, it was very helpful.

[@apm]

+Briste Belle I'm glad that you found the video useful. I hope your exam goes well today!

[@sfindaa8523]

APMonitor.com Look what happened!! I had a problem on the exam that was Very similar to the last problem you did. Thanks a lot, I'm glad I watched it!

[@apm]

Great!

[@jessejames2265]

we're using this to sleep

[@apm]

I've heard that people typically come to KZbin to either be entertained or learn something. This is probably in the "learn something" category although I could work on the entertaining part more.