Question

write the formula of salt cake , black ash, washing soda​

Answer 1

Salt Cake - Sodium sulfate

Na2SO4

black Ash - Na2SO4 + 2 C → Na2S + 2 CO.

washing soda -. sodium carbonate

NA2CO3.10H2O

Answer 2

Answer:

salt cake: Na₂SO₄

black ash: Na₂CO₃+ CaS

washing soda: Na₂CO₃

Explanation:

• The common name of sodium sulfate is known as salt cake. Its molecular formula is Na₂SO₄.
• In the second step of the le-blanc process, sodium sulfide, and calcium carbonate reacts to form sodium carbonate and calcium sulfide. The mixture of this product is called black ash.

        CaCO₃+Na₂S ⇒ Na₂CO₃+CaS

• The common name of sodium carbonate is known as washing soda. Its molecular formula is Na₂CO₃.