A hydrated solid X on heating initially gives a monohydrated compound Y. Y upon heating above 373\; K leads to an anhydrous white powder Z \; . X and Z, respectively , are :

  • Option 1)

    Washing soda and soda ash.

  • Option 2)

    Baking soda and dead burnt plaster .

  • Option 3)

    Washing soda and dead burnt plaster.

  • Option 4)

    Baking soda and soda ash.

Answers (1)

X=Washing\; soda

Y=Soda \; Ash

Na_{2}CO_{3}.10H_{2}O (s)\overset{\Delta }{\rightarrow}Na_{2}CO_{3}.H_{2}O\; (y)\xrightarrow[T> 373k]{\Delta } Na_{2}CO_{3}\; (Soda \; Ash\; z)


Option 1)

Washing soda and soda ash.

Option 2)

Baking soda and dead burnt plaster .

Option 3)

Washing soda and dead burnt plaster.

Option 4)

Baking soda and soda ash.

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