Asample of ca(oh)2 is considered to be an arrhenius base because it dissolves in water to yield
a. ca2+ ions as the only positive ions in solution
b. h3o+ ions as the only positive ions in solution
c. oh– ions as the only negative ions in solution
d. h– ions as the only negative ions in solution

Answer : The correct option is, (C) ions as the only negative ions in solution

Explanation :

According to the Arrhenius concept, an acid is a substance that ionizes in the water to give hydronium ion or hydrogen ion and a bases is a substance that ionizes in the water to give hydroxide ion .

A sample of is considered to be an Arrhenius base because when it dissolves in the water to yield ions as the only negative ions in solution.

Hence, the correct option is, (C)

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .