Câu ví dụ
- On passing hydrogen fluoride gas (in excess) through the salt, ammonium fluoride absorbs the gas to form the addition compound ammonium bifluoride.
Khi đi qua khí hydro fluoride (dư thừa) qua muối, amoni fluoride hấp thụ khí để tạo thành hợp chất bổ sung amoni bifluoride.