You are Here: Home

# Which statement is untrue

Announcements Posted on
Four hours left to win £100 of Amazon vouchers!! Don't miss out! Take our short survey to enter 24-10-2016
1. Look at attachment:

So lets go through them:

A: the larger the log(Kc) the more positive the Kc value. Thus statement A is true

B: e.d.t.a has a higher Kc value so will displace 1,2-diaminoethane

C: this is just something we have to know. It is true

D: this is also true as all others are either monodentate/hexadentatde. This is true.

It would seem all answers are true. However, B is the answer. Why?
Attached Images

2. (Original post by ilovemath)
Look at attachment:

So lets go through them:

A: the larger the log(Kc) the more positive the Kc value. Thus statement A is true

B: e.d.t.a has a higher Kc value so will displace 1,2-diaminoethane

C: this is just something we have to know. It is true

D: this is also true as all others are either monodentate/hexadentatde. This is true.

It would seem all answers are true. However, B is the answer. Why?
They have very similar Kc values which suggests the stability of the complexes in about the same so edta would be unlikely to displace 1,2-diaminoethane.
3. What's bothering me is the en complex has only 1 ligand in that table...

so is that K value for one ligand or is it a typo and there should be there ligands
4. (Original post by EierVonSatan)
What's bothering me is the en complex has only 1 ligand in that table...

so is that K value for one ligand or is it a typo and there should be there ligands
I didn't even see that. I think it should be three as well.. maybe it's a typing error. :/
5. (Original post by EierVonSatan)
What's bothering me is the en complex has only 1 ligand in that table...

so is that K value for one ligand or is it a typo and there should be there ligands
typo probs
6. (Original post by NutterFrutter)
They have very similar Kc values which suggests the stability of the complexes in about the same so edta would be unlikely to displace 1,2-diaminoethane.
but it could...any way it was not a real exam so I shouldn't worry to much
7. this statement is untrue

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: May 11, 2012
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Today on TSR

### Who is getting a uni offer this half term?

Find out which unis are hot off the mark here

### How to get a 1st class degree

Poll
Study resources

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.