lea has just ordered a box of \universal\ litmus paper. she dips one piece into vial a, and it turns green…
lea has just ordered a box of \universal\ litmus paper. she dips one piece into vial a, and it turns green. she dips another piece into vial b, and it turns red. which vial, a or b, contains a greater concentration of h+ ions? vial
Answer
Explanation:
Step1: Recall litmus - paper color - pH relationship
Universal litmus paper turns green in a neutral or slightly basic solution (pH around 7 - 8), and red in an acidic solution (pH < 7).
Step2: Relate pH and H⁺ ion concentration
The lower the pH, the higher the concentration of H⁺ ions. An acidic solution (red - litmus) has a higher H⁺ ion concentration than a neutral or basic solution (green - litmus).
Answer:
B