Ask Question
19 May, 21:31

In the chemical reaction below, calcium (Ca) and water (H2O) react to form calcium hydroxide (Ca (OH) 2) and hydrogen gas (H2).

Ca (s) + 2H2O (l) → Ca (OH) 2 (aq) + H2 (g)

Calcium and water are the reactants in this chemical reaction, whereas calcium hydroxide and hydrogen gas are the products that are formed. Once the reaction reaches completion,

A.

the total mass of the products will be greater than the original mass of the reactants.

B.

the total mass of the products will be equal to the original mass of the reactants.

C.

the products of the reaction will have changed back into the reactants.

D.

the total mass of the products will be less than the original mass of the reactants.

+3
Answers (2)
  1. 19 May, 22:40
    0
    Answer: Option B) the total mass of the products will be equal to the original mass of the reactants.

    Explanation:

    At completion, the equation

    Ca (s) + 2H2O (l) → Ca (OH) 2 (aq) + H2 (g) can be said to be at equilibrium (i. e mass of reactants will equal that of products formed). So, the law of conservation of mass has been obeyed since the mass of the entire system is conserved.

    Thus, the total mass of the products will be equal to the original mass of the reactants.
  2. 19 May, 23:39
    0
    Answer: the total mass of the products will be equal to the original mass of the reactants
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “In the chemical reaction below, calcium (Ca) and water (H2O) react to form calcium hydroxide (Ca (OH) 2) and hydrogen gas (H2). Ca (s) + ...” in 📙 Biology if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers