Scelta multipla
In the reaction between Pb(NO3)2 and MgSO4 in aqueous solution, which product forms a precipitate?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
Scelta multipla
Which one of the following compounds will dissociate into the largest number of ions when dissolved in water?
A
KCl
B
Na\(_2\)SO\(_4\)
C
Na\(_3\)PO\(_4\)
D
CaCl\(_2\)
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Identify the formula of each compound and determine how many ions each produces upon dissociation in water.
For KCl, it dissociates into K$^+$ and Cl$^-$ ions, so it produces 2 ions in total.
For Na\(_2\)SO\(_4\), it dissociates into 2 Na$^+$ ions and 1 SO\(_4^{2-}\) ion, producing 3 ions in total.
For Na\(_3\)PO\(_4\), it dissociates into 3 Na$^+$ ions and 1 PO\(_4^{3-}\) ion, producing 4 ions in total.
For CaCl\(_2\), it dissociates into 1 Ca\(^{2+}\) ion and 2 Cl$^-$ ions, producing 3 ions in total.
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