When NH3 gas is exposed to HCl, white fumes are formed which are chemically:
Correct answer: B. NH4Cl
- A. NH4+
- B. NH4Cl
- C. HCl fumes
- D. Cl
Explanation
b) NH4Cl:NH4Cl is the correct chemical formula for ammonium chloride. When NH3 gas reacts with HCl gas, it forms ammonium chloride (NH4Cl), which is a white solid. The white fumes observed in this reaction are attributed to the formation of NH4Cl.
This question appeared on the HEC Phase II 2017 paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Bronsted-Lowry and Lewis Concepts
The Brønsted-Lowry concept defines acids as proton donors and bases as proton acceptors, producing conjugate acid-base pairs. The Lewis concept extends the idea to electron-pair acceptors and donors, so compounds such as BF3 and NH3 can be treated as acid and base even without proton transfer, unlike the Arrhenius definition.
Practise Acids, Bases and Salts
314 free Acids, Bases and Salts MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.