Does anyone know the answers the pH analysis gizmo?

[amanda]

1. A new mild dish detergent is being tested before putting it on the market. If the new detergent were tested with 0-14 pH test paper, the test strip would most likely turn what color?

1st pH paper- Red pH1
2nd- 4
3rd - 8
4th- 13
A. 2.3
B. 5.6
C. 8.2
D. 13.2

2.Chemicals in the air can combine with rain to produce acid rain, which is harmful to the environment. Which of these is most likely to be the pH of acid rain?
A. 0
B. 4
C. 10
D. 14

3. Based on the materials measured in the Gizmo, what is the most likely pH of apple juice?
A. 0.3
B. 3.9

C. 8.4
D. 11.7

4. Suppose you have already compared the pH values of two substances using 0-14 paper. When would a follow-up test using 4.5-7.5 paper be most helpful?
A. when both substances had a pH value of about 3 on the 0-14 paper
B. when both substances had a pH value of about 6 on the 0-14 paper
C. when both substances had a pH value of about 9 on the 0-14 paper
D. when one substance had a pH value of about 5 and the other substance had a pH value of about 7 on the 0-14 paper

[dearjuliee]

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