Students then carry out a second reaction with calcium chloride and baking soda in the universal indicator solution. In this example, students observe the production of both a gas and a solid, a color ...

An internal silver-silver chloride element, in contact with the internal filling solution, establishes a fixed potential. The ion-selective membrane undergoes ion exchange with calcium in the sample, ...

Ingredients: 20g Sodium Carbonate (washing soda) in 200mL water 10g Calcium Chloride (painter's desiccant) in 100mL water 3g Citric Acid (used for canning) in 30mL water Instructions: Combine Calcium ...