White powder like table salt
Calcium chloride has the formula CaCl2 if anhydrous. Potassium phosphate has the formula K3PO4.
Potassium chloride is a white crystalline solid at room temperature.
They are both fine white powder type crystals with high Mp's so I would go with density or molar mass. The molar mass of strontium chloride is 158.53 (anhydrous, and up to 266.62g/mol at it's most hydrated) and of potassium chloride is 74.55g/mol. You could so a density test but for that you must make sure to use the anhydrous form. I believe the density of strontium chloride is 3.05g/cm3 (when it is anhydrous) and potassium chloride is 1.98g/cm3. The problem with this is if stontium chloride's density can be recorded as low as 1.93 depending on how hydrated it is so in order to this accuratedly you must use the anhydrous form.
Sodium chloride is not anhydrous when I swim in the ocean. I want it anhydrous when I sprinkle it on my food.
Potassium chloride
No, potassium chloride contains potassium chloride.
Yes, aluminium chloride is a salt.
From 100 to 113 Deg C, barium chloride convert to anhydrous form.
Sncl4
No, reacting zinc with hydrogen chloride will yield zinc chloride and hydrogen gas. Potassium chloride can be prepared by reacting potassium with hydrogen chloride or (more safely) potassium hydroxide with hydrogen chloride.
Potassium chloride is react with AgNO3 , the chloride ion subtract from potassium chloride to form silver chloride precipitate and potassium nirate. KCl + AgNO3 → KNO3 + AgCl↓
Potassium Chloride in fact 2 Potassium Chloride