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A red liquid (A) when treated with sodiu...

A red liquid (A) when treated with sodium carbonate gives a mixture of two salts (B) and (C) in the solution In which (C) contains oxygen. The mixture then on acidification with sulphuric acid and distillation produces the red liquid (A) again.
Select the correct statement (or the liquid (A).

A

It acts as an oxidising agent

B

It is sparingly soluble in water

C

It converts the yellow-dye stuff fluorescein (l) into red colour compound

D

All of these

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem step by step, we can analyze the information provided and deduce the correct answer. ### Step 1: Identify the Red Liquid (A) The problem states that there is a red liquid (A) that reacts with sodium carbonate. Given the context, the red liquid is likely bromine water (Br2 in water), which is known for its reddish-brown color. **Hint:** Think about common red liquids in chemistry that can undergo reactions with sodium carbonate. ### Step 2: Reaction with Sodium Carbonate When bromine water (A) reacts with sodium carbonate (Na2CO3), it produces two salts: one that contains oxygen (C) and one that does not (B). The likely products are sodium bromide (NaBr) and sodium bromate (NaBrO3). **Hint:** Consider the types of salts that can form from the reaction of a halogen with a carbonate. ### Step 3: Identify the Salts From the reaction: - Salt B: Sodium bromide (NaBr) - does not contain oxygen. - Salt C: Sodium bromate (NaBrO3) - contains oxygen. **Hint:** Recall the oxidation states and the composition of the salts formed from halogens. ### Step 4: Acidification and Distillation The mixture of salts (NaBr and NaBrO3) is then acidified with sulfuric acid (H2SO4). The reaction produces bromine gas (Br2) and sodium sulfate (Na2SO4). The distillation process allows the bromine gas to be collected, which is the red liquid (A) again. **Hint:** Think about how acid-base reactions can regenerate the original reactants, especially in the context of halogens. ### Step 5: Conclusion The red liquid (A) is confirmed to be bromine water (Br2 in water). The question asks to select the correct statement regarding liquid A. The statements provided in the video indicate that: 1. It acts as an oxidizing agent. 2. It is sparingly soluble in water. 3. It converts yellow dyestuff fluorescein into a red compound. All these statements are true regarding bromine water. **Hint:** Evaluate each statement based on the properties of bromine water and its reactions. ### Final Answer The correct answer is that all the statements about the red liquid (A) are true.
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