posted by Sarah on .
If you have 25.3 g of NaCl.
a) how many moles of NaCl do you have? = .433 mol
b) how many moles of sodium ions do you have?
c)how many moles of chloride ions do you have?
d) how many sodium ions do you have?
e) how many chloride ions do you have?
How do i solve these? Please help just need a format about how to set up the problem don't need you to give me the answer.
a is right.
b. There is 1 mole Na ion in a mole of NaCl (from the formula).
c. same for Cl ion.
d and e. There are 6.02 x 10^23 ions in a mole of ions. You know the mole of Na ions and Cl ions from b and c.
so if i had only 1 mol i would still have the same answers for a through e. How does that work?
Yes and No.
You have the same number of moles Na ion as moles NaCl so the answers are the same for b and c.
Re-read my response for c and d. There are 6.02 x 10^23 individual ions in a mole of ions. So if you had a mole of NaCl you would have a mole of Na ions, a mole of Cl ions, and 6.02 x 10^23 individual Na and Cl ions. YOu don't have a mole of NaCl; you actually have about 0.4 mol NaCl. Therefore, you will have about 0.4 mole Na ions, about 0.4 mole Cl ions, and about 0.4 x 6.02 x 10^23 individual Na ions and 0.4 x 6.02 x 10^23 individual Cl ions.