Nickel(II) Chloride and Water Chemistry

The video tutorial explains how to write the equation for nickel(II) chloride (NiCl2) plus water (H2O). It begins by introducing the compounds and checking the solubility of nickel chloride in water using solubility rules. The video then describes the dissolution process, where NiCl2 breaks into ions in water, and explains how to represent this in an equation. Different notations for the equation are discussed, including the use of 'aq' for aqueous solutions. The tutorial concludes with a summary of the equation and a thank you from Dr. B.

What is the initial form of nickel(II) chloride used in the reaction with water?

• Liquid

• Gas

• Solid

• Aqueous

According to solubility rules, which ions are generally soluble in water?

• Chloride ions

• Carbonate ions

• Phosphate ions

• Sulfate ions

What charge does the nickel ion have after nickel(II) chloride dissociates in water?

• 2+

• 1+

• 2-

• 1-

How many chloride ions are produced when nickel(II) chloride dissociates in water?

• Four

• Three

• Two

• One

What does the 'aq' symbol represent in a chemical equation?

• Solid state

• Gas state

• Dissolved in water

• Liquid state

Where might you sometimes see water represented in a chemical equation?

• Below the arrow

• Above the arrow

• To the left of the reactants

• To the right of the products

What is the main product when nickel(II) chloride is dissolved in water?

• Nickel(II) oxide

• Nickel(II) hydroxide

• Nickel(II) ions and chloride ions

• Nickel(II) sulfate