Achemical analysis has revealed the following composition for the rain falling on the city of thule: 1.38 mg/l of hno3, 3.21 mg/l of h2so4, and 0.354 mg/l of hcl. hno3, h2so4 and hcl are strong acids, so you can assume that the h is fully released when these acids are dissolved in water. a. calculate the ph of the rain water. assume that the impact of carbon dioxide on ph is negligible. b. based on the ph you obtained in question a, comment if it would be reasonable to neglect the effect of carbon dioxide

pH = 4.19

Explanation:

Let's assume we have 1 L of rain, then we'll have

Now let's convert the mass into moles:

One mol of each of these strong acids is equal to one mol of H⁺, so the total number of H⁺ moles in 1 L of rain is:

The molar concentration of H⁺, or [H⁺], is:

According to EPA, typical acid rain has a pH between 4.2 and 4.4, so in this case it is reasonable to neglect the effect of carbon dioxide, because the calculated pH value is not significantly different than the pH of typical acid rain.

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.