Write the positive and negative ions that result when the following compounds are dissolved in aqueous solution:
Na2S (aq):
(NH4)2CO3 (aq):
K2SO4 (aq):
How many grams of NiF2 are there in 201 grams of an aqueous solution that is 12.8 % by weight NiF2.
To determine the positive and negative ions that result when a compound is dissolved in aqueous solution, we need to break down the compound into its constituent ions.
1. Na2S (aq):
The compound Na2S dissociates into two sodium ions (Na+) and one sulfide ion (S2-) when dissolved in aqueous solution. So, the positive ions are Na+ and the negative ion is S2-.
2. (NH4)2CO3 (aq):
The compound (NH4)2CO3 dissociates into two ammonium ions (NH4+) and one carbonate ion (CO32-) when dissolved in aqueous solution. So, the positive ions are NH4+, and the negative ion is CO32-.
3. K2SO4 (aq):
The compound K2SO4 dissociates into two potassium ions (K+) and one sulfate ion (SO42-) when dissolved in aqueous solution. So, the positive ions are K+, and the negative ion is SO42-.
In summary:
1. Na2S (aq): positive ions (Na+) and negative ions (S2-)
2. (NH4)2CO3 (aq): positive ions (NH4+) and negative ions (CO32-)
3. K2SO4 (aq): positive ions (K+) and negative ions (SO42-)