- Chemical Engineering Basics - Section 1
- Chemical Engineering Basics - Section 2
- Chemical Engineering Basics - Section 3
- Chemical Engineering Basics - Section 4
- Chemical Engineering Basics - Section 5
- Chemical Engineering Basics - Section 6
- Chemical Engineering Basics - Section 7
- Chemical Engineering Basics - Section 8
- Chemical Engineering Basics - Section 9
- Chemical Engineering Basics - Section 10
- Chemical Engineering Basics - Section 11
- Chemical Engineering Basics - Section 12
- Chemical Engineering Basics - Section 13
- Chemical Engineering Basics - Section 14
- Chemical Engineering Basics - Section 15
- Chemical Engineering Basics - Section 16
- Chemical Engineering Basics - Section 17
- Chemical Engineering Basics - Section 18
- Chemical Engineering Basics - Section 19
- Chemical Engineering Basics - Section 20
- Chemical Engineering Basics - Section 21
- Chemical Engineering Basics - Section 22
- Chemical Engineering Basics - Section 23
- Chemical Engineering Basics - Section 24
- Chemical Engineering Basics - Section 25
- Chemical Engineering Basics - Section 26
- Chemical Engineering Basics - Section 27
- Chemical Engineering Basics - Section 28


Chemical Engineering Basics - Engineering
Q1: Which of the following is a weak acid ?A HF
B HCl
C HI
D HBr
ANS:A - HF Among the options provided, HF (hydrofluoric acid) is considered a weak acid. Hydrofluoric acid (HF) is a weak acid because it only partially dissociates into ions when dissolved in water. Specifically, in aqueous solution, HF partially dissociates into hydrogen ions (H⁺) and fluoride ions (F⁻). However, the dissociation is not complete, meaning that only a small fraction of HF molecules ionize, resulting in a relatively low concentration of hydrogen ions in solution. In contrast, HCl (hydrochloric acid), HBr (hydrobromic acid), and HI (hydroiodic acid) are strong acids. They undergo complete dissociation into ions when dissolved in water, resulting in a high concentration of hydrogen ions in solution. So, the correct answer is HF (hydrofluoric acid). |


For help Students Orientation
Mcqs Questions
One stop destination for examination, preparation, recruitment, and more. Specially designed online test to solve all your preparation worries. Go wherever you want to and practice whenever you want, using the online test platform.