An element reacts with oxygen to give a compound with a high melting point. This compound isalso soluble in water.The element is likely to be-(A) Calcium (B) Carbon(C) Silicon (D) Iron
Question
An element reacts with oxygen to give a compound with a high melting point. This compound isalso soluble in water.The element is likely to be-(A) Calcium (B) Carbon(C) Silicon (D) Iron
Solution
The element is likely to be Calcium (A). Here's why:
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Calcium, being a metal, reacts with oxygen to form a compound called calcium oxide. The reaction is as follows: 2Ca + O2 -> 2CaO.
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Calcium oxide has a high melting point of 2572°C, which fits the description given in the question.
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Calcium oxide is also soluble in water, which again fits the description. When it dissolves in water, it forms calcium hydroxide. The reaction is as follows: CaO + H2O -> Ca(OH)2.
Therefore, based on the given properties, the element is likely to be Calcium.
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