41.
The pH of rainfall was measured to be as per the following at four places A, B, C and
D. Which place had the acid deposition ?
(1) A-5.5
(2)
B-6-2
(3)
C-6-5
(4) D-6-9
Answers
Answer:
Acid Rain and the pH Scale
The pH scale measures how acidic an object is. Objects that are not very acidic are called basic. The scale has values ranging from zero (the most acidic) to 14 (the most basic). As you can see from the pH scale above, pure water has a pH value of 7. This value is considered neutral—neither acidic or basic. Normal, clean rain has a pH value of between 5.0 and 5.5, which is slightly acidic. However, when rain combines with sulfur dioxide or nitrogen oxides—produced from power plants and automobiles—the rain becomes much more acidic. Typical acid rain has a pH value of 4.0. A decrease in pH values from 5.0 to 4.0 means that the acidity is 10 times greater.
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Answer:
Correct option is (1) A- 5.5 among all the places, Place A has the highest pH of the acid deposition.
Explanation:
A water-based solution's acidity or basicity is measured using the pH scale. At ambient temperature, pure water is neither acidic nor basic and has a pH of 7. Acidic solutions have a lower pH whereas basic solutions have a higher pH.
The hydrogen ion concentration in a water-based solution is measured by pH. Strong bases may have a pH above 14, while very strong acids may have a pH below 14.
Any type of precipitation that contains acidic elements, such as sulfuric acid or nitric acid, that falls to the ground from the atmosphere in wet or dry forms is referred to as acid rain or acid deposition. This can apply to rain, snow, fog, and even corrosive dust. When Sulphur dioxide and nitrogen dioxide are released into the atmosphere and carried by wind and air currents, acid rain is the result.
The pH range of typical rain is between 5.0 and 5.5, which is somewhat acidic. However, rain becomes significantly more acidic when it interacts with Sulphur dioxide or nitrogen oxides produced by automobiles and power plants. Acid rain typically has a pH of 4.0.
So, if we see the acid deposition of all the four places the highest amount of acid deposition is in place A which 5.5.
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