the concentration of hydrogen ions in a soil sample is 1.3 • 10 ^-6M. when the soil is tested with pH meter, what value should the meter read?
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Answer:
pH = -log [H+]
= -log [1.3 • 10^-6]
= 6 - log 1.3
= 6 - 0.113
pH = 5.88
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