LeChatelier's Principle

Ben, Iain, Cara, Cheryl

Solubility of Carbon Dioxide

The decrease in pressure caused a shift towards the reactants and the solution became less acidic. LeChatelier's principle states that when the pressure is decreased the equilibrium shits towards the side that reduces moles of gas. The color of the original was light green, while the one with less pressure is blue. Blue is less acidic on the pH indicator scale.

Solubility of Magnesium Hydroxide

The equilibrium shifted towards the products because HCl reacted with the OH ions produced.

Mg(OH)2 --> Mg + 2OH

OH + H --> H2O