DAT Question of the Day – Logarithms & pH

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#DAT Question of the DAY
The formula for pH is pH = -log[H₃O⁺]. If the hydronium ion concentration was 2 x 10⁻⁴, WITHOUT using a calculator, what is the approximate pH?


a) 2
b) 4
c) -2
d) -3.8
e) 3.8
f) -4




Answer:
![Answer](second image)
E is correct
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