Question

What happen when red rose is react with conc sulphuric acid

Answer 1

Standard acid-base reaction occurs (so you’ll get an aqueous solution of sodium sulphate), though if the acid is present in excess, the sodium sulphate produced will react to produce sodium bisulphate:

2NaOH + H2SO4 → Na2SO4 + H2O

Na2SO4 + H2SO4 ⇌ 2 NaHSO4

The latter reaction is reversible and is temperature & concentration dependent

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