O pH de uma limonada está em torno de 3. Qual a concentração aproximada de íons H+ nesta limonada?

a) 1,0 x 10^-3(10 elevado a -3) mol/L
b) 5,0 x 10^-3 mol/L
c) 1,0 x 10^-11 mol/L
d) 2,5 x 10^-4 mol/L
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