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Titration Calculations Question HELP



On the mark scheme, for iii, it says:

Why x2 moles?? Can someone help me with the equation itself so I can see the mole ratio- I've tried for ages but I'm rubbish at balancing equations and stuff D:
Reply 1
Avatar for malolis
malolis
KOH reacts in a 2:1 ratio to sulphuric acid.

Sulphuric acid - H2SO4 and therefore diprotic - dissociates into 2 H ions for every molecule of H2SO4 so, each molecule of H2SO4 reacts with 2 molecules of KOH.
Reply 2
Avatar for Quira
Quira
OP
malolis
KOH reacts in a 2:1 ratio to sulphuric acid.

Sulphuric acid - H2SO4 and therefore diprotic - dissociates into 2 H ions for every molecule of H2SO4 so, each molecule of H2SO4 reacts with 2 molecules of KOH.

OHHHHHHHHHHHH
I forgot about the whole H+ business >____>
Btw, is KHSO4 valid?
Reply 3
Avatar for malolis
malolis
Erm, not really - H2SO4 dissociates into 2H+ and SO4-
H2SO4 dissociates in two stages:

H2SO4 ---> H+ + HSO4-
HSO4- ---> H+ + SO4-
Reply 5
Avatar for malolis
malolis
EierVonSatan
H2SO4 dissociates in two stages:

H2SO4 ---> H+ + HSO4-
HSO4- ---> H+ + SO4-


Yes but he's not really required to know that at A level and it doesn't really affect his answer. ^^

I didn't want to confuse him :smile:
malolis
Yes but he's not really required to know that at A level and it doesn't really affect his answer. ^^

I didn't want to confuse him :smile:


Okay...but he's a she by the way :p:
Reply 7
Avatar for malolis
malolis
EierVonSatan
Okay...but he's a she by the way :p:


:shifty:
Reply 8
Avatar for jnntng
jnntng
2koh +h2so4 --> K2so4 + 2h2o

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