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vera_ewing
 one year ago
Which of the following statements are true?
pH = log[H3O+]
An increase in the pH of a solution means the hydrogen ion concentration increased.
A neutral solution has pH = 7.
A pH change of 1 means a 10fold change in [H+].
A. I and III only
B. II and III only
C. III and IV only
D. I, II, and III only
vera_ewing
 one year ago
Which of the following statements are true? pH = log[H3O+] An increase in the pH of a solution means the hydrogen ion concentration increased. A neutral solution has pH = 7. A pH change of 1 means a 10fold change in [H+]. A. I and III only B. II and III only C. III and IV only D. I, II, and III only

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Australopithecus
 one year ago
Best ResponseYou've already chosen the best response.1For I Remember the formulas! pOH = log_10([OH]) For II Does an increase concentration mean that hydrogen ion concentration go up? Think about the definition of pH (pH = log_10([+H])) and look at a scale. Make sure you are right. For III Yeah this is obvious For IV Well by definition: pH = log_10([+H]) because log_10(x) = y is the same as 10^(y) = x We get: 10^pH = [+H] Play with this formula. Remember what exponents are: x^5 = x*x*x*x*x 10^3 = 10*10*10 etc

vera_ewing
 one year ago
Best ResponseYou've already chosen the best response.0So the answer is C?

Australopithecus
 one year ago
Best ResponseYou've already chosen the best response.1yeah that should be correct.
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