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Write the chemical formula of washing so...

Write the chemical formula of washing soda. How is it obtained from baking soda ? Name one use of washing soda, other than washing clothes.

Text Solution

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Chemical formula of washing soda is `Na_(2)CO_(3).10H_(2)O`. Washing soda is obtained by heating baking soda followed by recrystallisation of sodium carbonate.
`2NaHCO_(3)(s) overset("heat")rarr Na_(2)CO_(3)(s) + H_(2)O(i) + CO_(2)(g)`
`Na_(2)CO_(3)(s) + 10H_(2)O(l) rarr Na_(2)CO_(3).1DH_(2)O(s)`
Use : it is used in the manufacturing of glass in glass industry.
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Give the chemical formula of washing soda.

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Knowledge Check

  • When washing soda is heated,

    A
    CO is released
    B
    `CO + CO_2` is released
    C
    `CO_2` is released
    D
    water vapours are released.

  • Washing soda has the formula :

    A
    `Na_(2)CO_(3)*7H_(2)O`
    B
    `Na_(2)CO_(3)*10H_(2)O`
    C
    `Na_(2)CO_(3)*3H_(2)O`
    D
    `Na_(2)CO_(3)`

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    Write the chemical formula of baking soda. How is baking soda prepared? Write the reaction which takes place when it is heated during cooking.

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