Question

1. use the solubility table and classify each compound as water soluble or water insoluble. ni(oh)₂ choose match kcl choose match li₃po₄ choose match ni(no₃)₂ choose match choose match water soluble water insoluble

Explanation:

Step1: Analyze \( \ce{Ni(OH)2} \)

Hydroxides of most transition metals (like Ni) are insoluble in water. So \( \ce{Ni(OH)2} \) is water insoluble.

Step2: Analyze \( \ce{KCl} \)

Salts of Group 1 metals (like K) and halides (like Cl⁻) are generally soluble. So \( \ce{KCl} \) is water soluble.

Step3: Analyze \( \ce{Li3PO4} \)

Phosphates are often insoluble, but salts of Group 1 metals (like Li) are an exception and are soluble. So \( \ce{Li3PO4} \) is water soluble.

Step4: Analyze \( \ce{Ni(NO3)2} \)

Nitrates of most metals are soluble in water. So \( \ce{Ni(NO3)2} \) is water soluble.

Answer:

• \( \ce{Ni(OH)2} \): Water insoluble
• \( \ce{KCl} \): Water soluble
• \( \ce{Li3PO4} \): Water soluble
• \( \ce{Ni(NO3)2} \): Water soluble