Worked example: Calculating equilibrium concentrations from initial concentrations | Khan Academy

In this video, we'll learn how to use initial concentrations along with the equilibrium constant to calculate the concentrations of reaction species at equilibrium. View more lessons or practice this subject at www.khanacadem...
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[@missminecorn7446]

Been struggling for abit and this is chefs kiss

[@BobbyJCFHvLichtenstein]

Dude, my professor never explained any of this, then gave us homework on it. I get that sometimes professors will assign homework on new material to make us figure it out and learn it ourselves, but it was (sort of) covered in lecture, so that wasn't his intention. Like... he literally skipped all examples that were on his slides, saying "we don't need to do that." Like, bro, we haven't been studying chemistry for decades, we need the example problems!!!

[@Mayuu16]

Thank you for sharing this video! May answer nako 😭

[@FarhinAhmed-be4iu]

Thank you!!

[@VENom-ks2ui]

wait I have a question is kc the same as keq??

[@themedic366]

Ty

[@carlosshennlopeziii2724]

Where did you get the 1.59?

[@arsemawoldeamlak3433]

2.65×0.6

[@freezy2755]

why not just use quadratic formula instead of square rooting to remove x squared

[@maryamdeen0]

its easier and less time consuming

[@FunemFlugel]

Котагым да тусиниксиз

[@Brian-em7yp]

How would you solve it if you have the initial concentration for the product of brcl but no initial concentration for the reactant of br2 and cl2?

[@fazlu1758]

Wonderful as usual🫡🫡🌟🌟🌟🌟🌟!

[@ryogonzalo3411]

Where did you get the 0.60?

[@ramanshtomar3207]

we assume its the initial concentration for the question (sorry for late answer just clicked on this vid)

[@briceayo1]

thanks now i understand

[@zekron4580]

Finally I understand

[@liv1522]

Where did the 4.65 come from?

[@squishy7542]

algebra to go from 1.59 - 2.65x = 2x to 1.59 = 4.65x

[@GeekyMysticYT]

2+2.65=4.65

[@saminakhatoon7693]

❤

[@estherwu247]

why isnt it +- square root?

[@PhysiCalculus981]

It is, but we only consider the positive answer because the negative answer wouldn't make sense in the context of a concentration problem, and so we just omit it.