6092 Chapt 11 Solubility and color of salts, ppt & compounds

Which salts are soluble?

• All salts of Group 1 metals and all ammonium salts are soluble.

• Only salts of Group 2 metals are soluble.

• All nitrates and sulfates are soluble.

• Only ammonium salts are soluble.

Color of zinc carbonate?

• white when cold

• blue when hot

• green when cold

• yellow when hot and white when cold

Color of copper(II) oxide?

• red

• blue

• green

• black

Identify the cation present in the yellow solution.

• Sodium ions (Na⁺ ions)

• Calcium ions (Ca²⁺ ions)

• Iron(III) ions (Fe³⁺ ions)

• Potassium ions (K⁺ ions)

Identify the cation present in the pale green solution.

• Copper(II) ions (Cu²⁺ ions)

• Iron(II) ions (Fe²⁺ ions)

• Nickel(II) ions (Ni²⁺ ions)

• Chromium(III) ions (Cr³⁺ ions)

Identity of blue solution?

• Copper(II) sulfate

• Sodium chloride

• Potassium nitrate

• Calcium carbonate

Color of lead(II)carbonate?

• Red when hot and blue when cold.

• Brown when hot and yellow when cold.

• Green when hot and white when cold.

• Black when hot and grey when cold.

Identify the precipitate.

• Iron(III) hydroxide (Fe(OH)₃)

• Copper(II) sulfate (CuSO₄)

• Sodium chloride (NaCl)

• Calcium carbonate (CaCO₃)

identify the solution. (Both test tube contain the same compound)

• copper(II) chloride

• sodium chloride

• potassium chloride

• calcium chloride

Which chlorides are insoluble?

• Silver chloride (AgCl)

• Sodium chloride (NaCl)

• Potassium chloride (KCl)

• Calcium chloride (CaCl₂)