Question

(A) what is universal indicator?

(b) Write the chemical equation involved in the preparation of sodium hydroxide. Name the process




ans immediately plzz .​

Answer 1

Answer:

$\huge\bold\pink {A}$

a mixture of dyes that changes colour gradually over a range of pH and is used (especially as indicator paper) in testing for acids and alkalis.

$\huge\bold\pink {B}$

Chemical equation : 2NaCl + 2H2O ---------------- 2NaOH + Cl2 + H2. The process is chloro-alkali process. Chloro for chlorine and alkali for sodium hydroxide.In this process hydrogen gas is evolved at cathode and chlorine gas is evolved at anode.

Explanation:

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Answer 2

Explanation:

A) a substance that changes to different colours according to whether another substance that touches it is an acid or an alkali

B)Chemical equation : 2NaCl + 2H2O ---------------- 2NaOH + Cl2 + H2. The process is chloro-alkali process. Chloro for chlorine and alkali for sodium hydroxide.In this process hydrogen gas is evolved at cathode and chlorine gas is evolved at anode.

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