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....
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ethanoic acid is correct answer
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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
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