The Student Room Group
Competition - post a photo you've taken of nature >>
Competition - post a photo you've taken of nature >>
Competition - post a photo you've taken of nature >>

This discussion is now closed.

Check out other Related discussions

HCl and moles

Teacher set some exercises.

Theres this one part im stuck on, " total no of moles of water in solution" solution= 5 cm3 of water + 5 cm3 of 2.88m HCl.

Main question is how many moles of water is in 5cm3 of 2.88M HCL 0.o ?
Reply 1
Avatar for Cytotoxic
Cytotoxic
Moles = Volume(in DM3) x Conc

So that's
0.005x2.88
=0.0144 moles.

Edit: hang on, do you mean moles of HCl or moles of water?
If you meant moles of water and there's 5cm3 of water/HCl, you can assume it weighs 5g. Moles = Mass/Mr so
5/(1+1+16)
=5/18
=0.28 moles
Reply 2
Avatar for msvf
msvf
OP
Thats cool, you can get moles of HCl that way.

But im was struggling to work out mole of water.
Reply 3
Avatar for Cytotoxic
Cytotoxic
I updated the post above yours.
Reply 4
Avatar for msvf
msvf
OP
Now why couldn't the teacher just tell us that???

cheers!

Related discussions

Latest

Trending

Trending

Articles for you