question: If Jim wants to lower the pH of his solution he should do what to the concentration of hydrogen ions inside of it?
choices.text: decrease increase
choices.label: A B
para: With a higher the concentration of hydrogen ions, a solution is more acidic and has a lower pH.
para_anno.effect_prop: pH
para_anno.cause_dir_str: higher
para_anno.effect_dir_str: lower
para_anno.cause_dir_sign: MORE
para_anno.effect_dir_sign: LESS
para_anno.cause_prop: oncentration of hydrogen ions
question_anno.less_effect_dir: lower
question_anno.less_cause_prop: concentration of hydrogen ions
question_anno.less_effect_prop: pH of his solution
question_anno.less_cause_dir: pH of his solution