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In order to compare the acidity of the resulting solutions when ZnBr鈧� and CdCl鈧� are dissolved in water, let's look at the elements involved: Zn, Cd, Br, and Cl. The acidity of their solutions will depend on their ability to release H鈦� ions when they form a solution. ZnBr鈧� dissolves in water to form Zn虏鈦� and 2Br鈦� ions, while CdCl鈧� dissolves in water to form Cd虏鈦� and 2Cl鈦� ions. Since both bromide and chloride ions are weak bases, we will focus on the cations 鈥� Zn虏鈦� and Cd虏鈦�. Comparing their positions in the periodic table, Cd is immediately below Zn in the same group and has a larger atomic radius, so it forms weaker bonds with the surrounding water molecules. Hence, Cd虏鈦� ions will have a higher tendency to donate a proton (H鈦�) to the water molecules to form hydronium ions (H鈧僌鈦�), which increases the acidity of the solution. Therefore, CdCl鈧� produces a more acidic aqueous solution than ZnBr鈧�. 2.

Both compounds result in the formation of Cu虏鈦� ions when dissolved in water. In the case of CuCl, it will form Cu虏鈦� and Cl鈦� ions, while Cu(NO鈧�)鈧� will form Cu虏鈦� and 2NO鈧冣伝 ions. Chloride and nitrate ions are weak bases and minimally impact the acidity of the solution. Since both compounds result in the formation of Cu虏鈦� ions, neither one is more acidic than the other. CuCl and Cu(NO鈧�)鈧� will produce solutions with similar acidity. 3.

When dissolved in water, Ca(NO鈧�)鈧� will form Ca虏鈦� and 2NO鈧冣伝 ions, while NiBr鈧� will form Ni虏鈦� and 2Br鈦� ions. The acidity of the resulting solutions again depends on their ability to release H鈦� ions. Nitrate and bromide ions are weak bases, so we will focus on the cations 鈥� Ca虏鈦� and Ni虏鈦�. Comparing their positions in the periodic table, Ca is an alkaline earth metal located in Group 2, while Ni is a transition metal located in Group 10. Alkaline earth metals, like Ca, typically form basic oxides when they react with oxygen, whereas transition metals, like Ni, can form amphoteric oxides. Since amphoteric oxides can both donate and accept protons (H鈦�), the Ni虏鈦� ions would have a higher tendency to donate a proton (H鈦�) to the water molecules, which will result in a more acidic solution. Therefore, NiBr鈧� produces a more acidic aqueous solution than Ca(NO鈧�)鈧�. #Summary# 1. CdCl鈧� produces a more acidic aqueous solution than ZnBr鈧�. 2. CuCl and Cu(NO鈧�)鈧� produce solutions with similar acidity. 3. NiBr鈧� produces a more acidic aqueous solution than Ca(NO鈧�)鈧�.