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A when added to silica gives B. A and (...

A when added to silica gives ` B. A` and (B) are :

A

`HF, H_2 SiF_4`

B

`HCl, H_2 SiCl_6`

C

`HCl, H_2 SiCl_6`

D

`HI, H_2 SiI_6`

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to identify the compound A that reacts with silica (SiO2) to produce compound B. ### Step-by-Step Solution: 1. **Identify Compound A**: - The problem states that compound A is a hydra acid from the halogen family. Among the hydrohalic acids (HF, HCl, HBr, HI), only hydrofluoric acid (HF) is known to react with silica. 2. **Reaction with Silica**: - When HF reacts with silica (SiO2), it forms a compound. The reaction can be represented as: \[ \text{HF} + \text{SiO}_2 \rightarrow \text{H}_2\text{SiF}_6 + \text{H}_2\text{O} \] - In this reaction, hydrofluoric acid (HF) reacts with silica to produce hexafluorosilicic acid (H2SiF6) and water (H2O). 3. **Identify Compound B**: - From the reaction, we can see that the product formed is hexafluorosilicic acid (H2SiF6). Therefore, compound B is H2SiF6. 4. **Final Answer**: - Compound A is HF (hydrofluoric acid) and compound B is H2SiF6 (hexafluorosilicic acid). ### Summary: - A (HF) and B (H2SiF6).
To solve the question, we need to identify the compound A that reacts with silica (SiO2) to produce compound B. ### Step-by-Step Solution: 1. **Identify Compound A**: - The problem states that compound A is a hydra acid from the halogen family. Among the hydrohalic acids (HF, HCl, HBr, HI), only hydrofluoric acid (HF) is known to react with silica. 2. **Reaction with Silica**: ...
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