# Homework Help: Electric Dipole Moment of copper and sulphate ions

1. Feb 17, 2010

### kihr

1. The problem statement, all variables and given/known data
The electric dipole moment of a CuSO4 molecule is 3.2 * 10^-32 (i.e. 10 raised to the power of -32)C-m. Find the separation between the copper and sulphate ions.

2. Relevant equations

Electric deipole moment = 2aq where 2a=separation between the two charges q and -q

3. The attempt at a solution

I am unable to proceed with the given data, because I need to find out the value of q. Please help me with some clues.The answer is 10^-3m. Thanks.

2. Feb 17, 2010

### gabbagabbahey

I suggest you Google "Copper Sulfate" and find out how ionized each component is (eg. If the compound is formed by doubly ionized Copper, you would have $\text{Cu}^{2+}$ and $\text{SO}_4{}^{2-}$ and so $q$ would be 2 times the charge of the electron).