Question

Finely ground nickel(II) hydroxide is placed in a beaker of water. It sinks to the bottom of the beaker and remains unchanged. An aqueous solution of hydrochloric acid (HCl) is then added to the beaker, and the Ni(OH ) 2 disappears. Which equation best describes what occurred in the beaker? A. Ni(OH ) 2 (s) + HCl(aq) → NiO(aq) + H 2(g) + HCl(aq) B. Ni(OH ) 2 (s) + 2HCl(aq) → NiC l 2 (aq) + 2 H 2 O(l) C. Ni(OH ) 2 (s) + 2 H 2 O(l) → NiC l 2 (aq) + 2 H 2 O(l) D. Ni(OH ) 2 (s) + 2 H 2 O(l) → NiCl 2(aq) + 3H 2O(l) + O 2(g)

Answer 1

Answer:C

Explanation:

Answer 2

The equation which best describes the reaction between Ni(OH)₂ & HCl is Ni(OH)₂(s) + 2HCl(l) → NiCl₂(aq) + 2H₂O(l).

What is neutralization reaction?

Those reaction in which acids combine with bases to form water molecule and salt is known as neutralization reaction.

In the given question, nickel hydroxide Ni(OH)₂ is a base and when it reacts with hydrochloric acid it will form water molecule and nickel chloride salt, and chemical reaction for this changes will be represent as follow:

Ni(OH)₂(s) + 2HCl(l) → NiCl₂(aq) + 2H₂O(l)

Reactions except this equation is not correct as in that equations formation of desired products will not takes place.

Hence Ni(OH)₂(s)+2HCl(l)→NiCl₂(aq)+2H₂O(l) best describes the change.

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https://brainly.com/question/203541