Question

Solid calcium oxide was take in a container and water was added slowly to it, (i) State the two observations made in the experiment. (ii) Write the name and chemical formula of the product formed.

September 11, 2024

Answer

(i) Following are the two observation:

(a) Calcium oxide (CaO) reacts vigorously with water to form slaked lime.

(b) The container becomes hot because a large amount of heat is released during this reaction.

(ii) The product formed is slaked lime for lime for which the chemical formula is Ca(OH)₂.

𝐶𝑎𝑂(𝑠) + 𝐻2𝑂(𝑙) → 𝐶𝑎(𝑂𝐻)2(𝑎𝑞)

𝐶𝑎𝑙𝑐𝑖𝑢𝑚 𝑜𝑥𝑖𝑑𝑒 𝑊𝑎𝑡𝑒𝑟 𝑆𝑙𝑎𝑘𝑒𝑑 𝑙𝑖𝑚𝑒 (𝐶𝑎𝑙𝑐𝑖𝑢𝑚 ℎ𝑦𝑑𝑟𝑜𝑥𝑖𝑑𝑒)

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