Chemistry
Grade-10
Easy

Question

Different steps involved in the preparation of sodium carbonate by the Solvay process are given below. Arrange them in the correct sequence.
text  (l)  end text Ca left parenthesis OH right parenthesis subscript 2 left parenthesis space straight s right parenthesis plus 2 NH subscript 4 Cl left parenthesis aq right parenthesis rightwards arrow 2 NH subscript 3 left parenthesis space straight g right parenthesis plus CaCl subscript 2 text  (aq)  end text plus 2 straight H subscript 2 straight O left parenthesis text  1) end text
text  (II)  end text 2 NaHCO subscript 3 ⟶ with 50 minus 1000 straight C on top Na subscript 2 CO subscript 3 plus straight H subscript 2 straight O plus CO subscript 2
text  (III)  end text open parentheses NH subscript 4 close parentheses HCO subscript 3 plus NaCl ⟶ with 30 degree straight C on top NaHCO subscript 3 plus NH subscript 4 Cl
text  (IV)  end text CaO plus straight H subscript 2 straight O rightwards arrow Ca left parenthesis OH right parenthesis subscript 2

  1. (I) (II) (IV) (III)
  2. (II) (III) (I) (IV)
  3. (IV) (II) (III) (II)
  4. (III) (II) (IV) (I)

hintHint:

Follow Solvay process flowchart.

The correct answer is: (III) (II) (IV) (I)


    The Solvay process produces soda ash from brine and from limestone 
    The steps in correct sequence:
    (III), (II), (IV), (I)

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