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ACIDS AND BASES Description of reactivity
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pH SCALE POWER OF HYDROGEN MEASURES IONS (H+ / OH-) IONS: Electrically charged particles ACIDS … H+ BASES … OH-
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pH scale measures REACTIVITY
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pH Scale Logarithmic scale (as is hurricane strength scale and earthquake scales) SCALE GOES FROM 0-14 7 IS NEUTRAL (not reactive) FURTHER AWAY FROM 7 A SUBSTANCE - THE MORE REACTIVE IT IS
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ACIDS AND BASES 0 – 6.9 ARE ACIDS 6.9 IS A WEAK ACID.1 IS A STRONG ACID 7 (pure water) is neutral 7.1 – 14 ARE BASES 7.1 IS A WEAK BASE 14 IS A STRONG BASE
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Logarithmic scale Difference is strength between a pH of 5 and a pH of 4 is 10X What is the difference in reactivity strength between a pH of 5 and a pH of 3???
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