Air pollutants frequently cause acid rain. A measure of the acidity is pH, which ranges between 1

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Air pollutants frequently cause acid rain. A measure of the acidity is pH, which ranges between 1 and 14. Pure water is neutral and has a pH of 7. Acidic solutions have a pH less than 7, whereas alkaline solutions have a pH greater than 7. A pH value can be computed by pH = -logx, where x represents the hydrogen ion concentration in moles per liter. In rural areas of Europe, rain- water typically has x = 10-4.7

(a) Find its pH. 

(b) Seawater has a pH of 8.2. How many times greater is the hydrogen ion concentration in rainwater from rural Europe than in seawater?

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