Conjugate Acid-Base Pairs Sample Problems

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[Blizzard1822]

yea but whats the rule for knowing which one is goin to give up a H+ or take the H+. does it have to do with charges of the ions need for neutrality? because i've noticed that NH3 is positive and takes a positive H ion from water and is a base. But is Instead of NH3 in this example another polyatomic ion such as H2SO4 it would give up its Hion and be labeled as a base. is my understanding of this correct?

[Papapodcasts]

@Blizzard1822 you need to know which compounds are acids and which are bases. That's how you know what will happen

[MrNikhilmurali]

@Papapodcasts but H2O sometimes act as acids & sometimes act as base..how can i understand which one is acids & which one is base

[Papapodcasts]

@MrNikhilmurali Depends on if water gives up the proton or receives the proton. Check out the lesson that goes with the sample problem.

[thebigvaca]

why is H2O the acid?

[Papapodcasts]

it depends on which compound give up the H+. If water picks up a proton is acts as a base. If it gives up an H+ like it does with NH3 it acts as an acid. I hope this helps you. Thanks for watching and best of luck with your studies.

Mr.P

[fellios94]

Excellent explanation!

[FckUyoutoobwatcher3]

this always looks so easy until i have to do it and then i mess it all up

[thementalpyro]

THANKS!