acid is 0 to 6 in ph level which makes it acidic
hypoiodous_acid is chemically_acidic_substance. acidity is ph. phosphorous_acid is chemically_acidic_substance. acids has low_ph chlorous_acid is acid. chlorous_acid is chemically_acidic_substance. phenol_acid is chemically_acidic_substance. sulfurous_acid is chemically_acidic_substance. sulfuric_acid is chemically_acidic_substance. acid is chemical.