The molecular formula of sodium carbonate is:

N a C O_{3}

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(N H_{4}) S O_{4}

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N a_{2} C O_{3}

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(N H_{4})_{2} S O_{4}

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Solution

The correct option is B $N a_{2} C O_{3}$
Sodium has valency $+ 1$ and is represented as $N a^{+}$ , ammonium has valency $+ 1$ and is represented as $N H_{4}^{+}$ , carbonate has valency $- 2$ and is represented as $C O_{3}^{- 2}$ and $S O_{4}^{- 2}$
Sodium carbonate is $N a_{2} C O_{3}$ and ammonium sulphate $(N H_{4})_{2} S O_{4}$ .

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Similar questions

Q. The formula of sodium carbonate is

N a_{2} C O_{3}

Q. What mass of sodium carbonate,

N a_{2} C O_{3}

is needed to make 120 mL of a 1.5 M solution? (Given formula weight of sodium carbonate = 106 amu)

The equations given below relate to the manufacture of sodium carbonate (molecular weight of Na₂CO₃ = 106).

Questions based on the production of 21.2 g of sodium carbonate.

What mass of sodium hydrogen carbonate must be heated to give 21.2 g of sodium carbonate (Molecular weight of NaHC0₃ = 84)?

The equations given below relate to the manufacture of sodium carbonate (Molecular weight of Na₂CO₃ = 106).
NaCl + NH₃ + CO₂ + H₂O $\overset{}{\to}$ NaHCO₃ + NH₄Cl
2NaHCO₃ $\overset{}{\to}$ Na₂CO₃ + H₂O + CO₂
Questions (a) and (b) are based on the production of 21.2 g of sodium carbonate.
(a) What mass of sodium hydrogen carbonate must be heated to give 21.2 g of sodium carbonate (Molecular weight of NaHCO₃ = 84)?
(b) To produce the mass of sodium hydrogen carbonate, calculate what volume of carbon dioxide, measured at STP would be required?

Q. The common name of sodium carbonate (

N a_{2} C O_{3}

) is washing soda.

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The molecular formula of sodium carbonate is:

The correct option is B Na2CO3Sodium has valency +1 and is represented as Na+, ammonium has valency +1 and is represented as NH+4, carbonate has valency −2 and is represented as CO−23 and SO−24Sodium carbonate is Na2CO3 and ammonium sulphate (NH4)2SO4.