Hydrogen ion concentration in distilled water is___________________?
Correct answer: A. 10-7
- A. 10-7
- B. 7 x 10^-7
- C. 107
- D. 7 x 10^7
Explanation
At 25°C, distilled water is neutral, so its hydrogen-ion concentration is 1.0 × 10^-7 mol/L. The value 7 is its pH, not its hydrogen-ion concentration.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Chemical Process Principles
2,710 free Chemical Process Principles MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Chemical Process Principles questions
Which of the following is a secondary air pollutant ?
Presence of nitrogen and phosphorous in waste water discharged into lakes and ponds causes_______________?
TLV of lead for public sewer/waste water is about ______________ ppm?
The progressive warming up of the earth's surface is mainly due to the___________________?
The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the_________________?
TLV of NO2 & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO2 causes_________________?