The pH Scale and Common Substances: Multiple Choice

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01Which of the following is a strong base (alkaline), with a pH often found between 11 and 13?
02Baking soda (sodium bicarbonate) dissolved in water is a common weak base. What is its approximate pH?
03Which of these beverages is typically the most acidic?
04Which of these common substances is a strong acid, typically having a pH of around 2-3?
05What is the approximate pH of human stomach acid, one of the most acidic environments in the body?
06The pH scale is logarithmic. A solution with a pH of 4 is how many times more acidic than a solution with a pH of 6?
07Human blood must be kept in a very narrow pH range to function properly. What is this slightly alkaline range?
08What is the pH of pure, neutral water at 25°C?
09What is the approximate pH of seawater, which is slightly alkaline?
10Rainwater is naturally slightly acidic due to dissolved carbon dioxide. What is the approximate pH of unpolluted rain?