Question

which of the following, when dissolved in distilled water will make it hard water ?

1. sodium chloride, calcium chloride
2. potassium chloride, sodium chloride
3. sodium chloride, magnesium chloride
4. calcium chloride, magnesium chloride

answer with explanation

Answer 1

Answer:

Calcium chloride is an inorganic compound, a salt with the chemical formula CaCl2. It is a white coloured crystalline solid at room temperature, highly soluble in water. It can be created by neutralising hydrochloric acid with calcium hydroxide. ... By depressing the freezing point of water, calcium chloride is used to prevent ice .

Explanation:

Answer 2

Answer:

Calcium chloride ...

thank u...

pls mark brainlist...