Law of Multiple Proportions

Lesson on the Law of Multiple Proportions, one of the laws that led to modern atomic theory.

[BensChemVideos]

Hey everyone! Hope you enjoyed the video! 😀

If you're interested, I do a weekly 🔴livestream 🔴 SUNDAYS at 9pm EDT right here on YouTube!

Hope to see you there! 😁

-BeN

[JaJa-xcgg]

I'm watching this video four years after it came out to prep for my AP chem class, and it's still better than my teacher ever explained. Thank you for everything you do!

[MC]

I am in here 12 YEARS after the vid was posted. Truly magnificent !

[yasmeengabr]

I'm watching this video eight years after it came out to prep for my college chem quiz, and it's still better than my TA ever explained. Thank you for everything you do!

[horace.e]

At 3:11, the mass 1.33g of O is obtained from 1g of C

1/12.011 = 0.083 mol
0.083 mol x 15.999 = 1.33g

Then for CO2, just multiply 1.33g by 2 to obtain the mass of two Oxygens per 1g of C

[unknownunknown]

thank you so much. im studying for a chem honors test and this saved me from having another mental breakdown. im actually so grateful for your video. thank you sir.

[harleyangelodenina]

its like this: suppose there are compounds *H2O* and *H2O2*
made by 2 elements right??

H=1 atomic mass, O=16 atomic mass

water(h2o)= (1 x 2) + *1 x 16* (amu)

Hydrogen Peroxide(H2O2)= (1 x 2 ) + *2 x 16* (amu)

Hydrogen has fixed mass in these 2 compunds, so we are looking for the fixed ratio of Oxygen in the 2 compounds
that is= 1x 16 =16
                             >Taken from O in H2O
            2x 16 =32
                             >Taken from O2 in H2O2


16/32 = 1/2
Oxygen has a ratio of *1:2*

[anandhijeyakumar]

Thank you sir. My FIITJEE Chemistry Teacher didn't explain this particular concept.

[Hafsahsediqah]

Hi! Thank you, i finally understood the topic. Afterall a video from 10 years ago helped. Thanks again<3

[juliettedenetris]

thanks so much for this! my chem teacher doesnt teach AT ALL and this will help me pass my tests for sure. this was super quick and helpful. really appreciate your videos. thank you!

[GMCdroopyman]

How did you get the number's 1.33g and 2.67 grams for the carbon-to-oxygen ratio? Im so confused...

[BensChemVideos]

@SchaRocket The law of multiple portions states that the masses of element B (oxygen) that combine with a fixed mass of element A (carbon) can be expressed as a ratio of small whole numbers. To get the whole number ratio, you simply divide the larger by the smaller. Is that a good answer?

[drainingstars]

Thank you so much!!! I can't believe that it is this understandable… My textbook is going crazy and just confused me even more. I totally got it now!! :-)

[BensChemVideos]

@sundayxafternoon I didn't find those masses. They're experimentally determined and have literature values.

[djalitanaful]

hi, just to leave my comment too. thank you so much, I was struggling to understand even watching some other clips but this clip made me get the point.

[kimchikoalaa]

the first 2 minutes is a good way of simplifying a formal definition.

[wilkinson]

thank you! i just plain couldn't understand this law until i listened to your explanation.

[allelectric]

THANK YOU BEN YOU ARE A LIFE SAVER my teacher is shit and he couldnt explain this in 45 minutes and you could in almost 5

[danishali-okik]

My teachers explained this and i didn't get the point after a long time i found this.Thanks buddy.

[nancyosazuwaharmony]

THANK YOU I HAVE A QUIZ TOMORROW AND BECAUSE OF THIS BEAUTIFUL VIDEO I SHALL THANK GOD