Lime is an alkaline substance. The figure shows some of the properties of a calcium compound 'X. The letters are not chemical symbols of substances. Answer the questions that follow: A colours mox Gas Indice a) Identify 'X' and 'Y'. (b) Write the chemical reaction involved and identify "P". (c) Identify 'Z' and write reaction of 'Y' to get 'Z'. (d) Name an acid which can liberate 'P' from 'X'! e) Write reaction of lime water with 'P'.
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ime1 / līm/ • n. (also quick·lime) a white caustic alkaline substance consisting of calcium oxide, obtained by heating limestone. ∎ (also slaked lime) a white alkaline substance consisting of calcium hydroxide, made by adding water to quicklime. No bro sorry
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X - Calcium Carbonate (CaCO3)
P - Calcium oxide (CaO)
Z - Carbon dioxide (CO2)
Cao + h2o - ca(oh)2
ca(oh)2 + co2 - caco3 + h2o
When exposed to air, calcium tarnishes quickly and reacts with water. Calcium metal is used as a reducing agent to make other metals like thorium and uranium. It's used as an alloying agent in aluminium, beryllium, copper, lead, and magnesium alloys.
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