It is a chemical change because it produces heat which is evidence that a chemical change has occured.
The baking soda mixed with phenol red solution is a chemical change. A new substance is formed. (color, gas bubbles)
No, it will not change because only strong bases such NaOH can turn phenol red into yellow. But, baking soda is a weak base.
A solution of calcium chloride is formed.
Electrolysis of calcium chloride solution release chlorine.
Calcium chloride is a solid and therefore is not measured by gallons. The weight of a gallon of calcium chloride solution would depend on the concentration of said solution.
Calcium chloride solution is neutral.
Sodium chloride is NaCl, calcium chloride is CaCl2. Consequently all the physical and chemical properties are different.
No, they simply form a solution of calcium chloride. This is correct, but one should add that the solution heats up because of the exothermic process involved when water causes the calcium chloride crystals to dissolve; the calcium chloride is dissociated into calcium and chloride ions. However, the question is why does the solution test as an acid when phenol red is added? The red solution turns yellow indicating an excess of hydrogen (hydronium) ions. There is no adequate answer that I could find on the Internet.
electrolyte solution
calcium sulfate
This solution is an electrolyte.
The heat of solution for CaCl2 is -176,2 cal/g.
Sodium chloride is soluble in water, calcium stearate not.Put the mixture in water, stir and filter; sodium chloride remain in solution, calcium stearate on the filter.
Salt in water is sodium. Ringer's lactate solution (sodium lactate solution and Hartmann's solution), is a mix of sodium chloride, sodium lactate, potassium chloride, and calcium chloride in water. Sodium Chloride is a mix of sodium and chloride.