When gypsum is heated to $393 K$ , it forms :

Option 1 - <math> <msub> <mrow> <mrow> <mi mathvariant="normal">C</mi> <mi mathvariant="normal">a</mi> <mi mathvariant="normal">S</mi> <mi mathvariant="normal">O</mi> </mrow> </mrow> <mrow> <mrow> <mn>4</mn> </mrow> </mrow> </msub> <mo>⋅</mo> <mn>0.5</mn> <msub> <mrow> <mrow> <mi mathvariant="normal">H</mi> </mrow> </mrow> <mrow> <mrow> <mn>2</mn> </mrow> </mrow> </msub> <mi mathvariant="normal">O</mi> </math>

Option 2 - Dead burnt plaster

Option 3 - Anhydrous  <math> <msub> <mrow> <mrow> <mi mathvariant="normal">C</mi> <mi mathvariant="normal">a</mi> <mi mathvariant="normal">S</mi> <mi mathvariant="normal">O</mi> </mrow> </mrow> <mrow> <mrow> <mn>4</mn> </mrow> </mrow> </msub> </math>

Option 4 - <math> <msub> <mrow> <mrow> <mi mathvariant="normal">C</mi> <mi mathvariant="normal">a</mi> <mi mathvariant="normal">S</mi> <mi mathvariant="normal">O</mi> </mrow> </mrow> <mrow> <mrow> <mn>4</mn> </mrow> </mrow> </msub> <mo>.</mo> <mn>5</mn> <msub> <mrow> <mrow> <mi mathvariant="normal">H</mi> </mrow> </mrow> <mrow> <mrow> <mn>2</mn> </mrow> </mrow> </msub> <mi mathvariant="normal">O</mi> </math>

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Answered by

Raj Pandey | Contributor-Level 9

5 months ago

Correct Option - 1

Detailed Solution:

Gypsum $\overset{393 K}{?} {C a S O}_{4} \frac{1}{2} H_{2} O$