## Identifying chemical amount of Ions

Chemistry and homework help forum.

Organic Chemistry, Analytical Chemistry, Biochemistry, Physical Chemistry, Computational Chemistry, Theoretical Chemistry, High School Chemistry, Colledge Chemistry and University Chemistry Forum.

Share your chemistry ideas, discuss chemical problems, ask for help with scientific chemistry questions, inspire others by your chemistry vision!

Please feel free to start a scientific chemistry discussion here!

Discuss chemistry homework problems with experts!

Ask for help with chemical questions and help others with your chemistry knowledge!

Moderators: expert, ChenBeier, Xen

Chemic
Newbie
Posts: 2
Joined: Thu Dec 19, 2019 5:18 pm

### Identifying chemical amount of Ions

Hi guys,
I need a step by step answer so I could apply it to other questions as well.

Calculate the chemical amount (moles) of potassium ions in 248.0 ml of a 0.1047 M solution of potassium phosphate?
ChenBeier
Distinguished Member
Posts: 460
Joined: Wed Sep 27, 2017 7:25 am
Location: Berlin, Germany
The question is which potassium phosphat is meant. There 3 different ones available. Which ones?

But general you calculate the moles of the 248 ml 0,1047 M . If you know the formula of the potassium phosphate, then multiply with the amount of K+
Chemic
Newbie
Posts: 2
Joined: Thu Dec 19, 2019 5:18 pm

in my question I have the following instructions:

The chemical amount of ions is determined from this value, adjusting for the number of ions for every formula unit ?
ChenBeier
Distinguished Member
Posts: 460
Joined: Wed Sep 27, 2017 7:25 am
Location: Berlin, Germany
Step by Step
Let say we have Dipottassiumhydrogen phosphate.
First what is the formula of it?
Second what is mole of your given number. 248 ml ; 0,1047 M
How many pottassium moles does it correspond