Question

A cloth strip dipped in onion juice is used for testing a liquid X'. The
liquid X' changes its odour. Which type of an indicator is onion juice?
The liquid X' turns blue litmus red. List the observations the liquid X
will show on reacting with the following:
(a) Zinc granules
(b) Solid sodium carbonate
Write the chemical equations for the reactions involved.​::::
-: Esska answer "ethanoic acid" aaa sakta h....

Answer 1

Answer:

ethanoic acid is correct answer

Answer 2

Answer:

onion juice is a type of universal indicator.

if liquid X turns blue litmus red, then it must an acid.

a. Zn granules

      acids when react with metal gives out H₂ gas and salt

     if we consider X as HCl,

       2Zn + 2HCl   ---->    H₂ + 2ZnCl

B. Solid Na₂CO₃

    if we consider HCl as X

    acids react with metal carbonates to form salt, CO₂, H₂O

         2HCl + Na₂CO₃  ------>  CO₂ + H₂O + 2NaCl