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Honors Chemistry Quiz, 2nd semester

Alexis B. 7 perguntas 5,0 (1 avaliação)

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1Acid rain is created when acidic substances, such as sulfur dioxide, are released into and mix with the atmosphere.
1. AVerdadeiro
2. BFalso
2Acids have a pH of
1. Aless than 7
2. Bmore than 7
3. C4 or less
4. Dno more than 1
3Distilled water has a pH of 7. Therefore, on the pH scale, water is
1. Astrongly basic.
2. Bmildly acidic.
3. Cneutral.
4. Dalkaline.
4A _____________ resists changes in pH. It is composed of an acid-base pair, and can be used to "protect" other substances from changes in pH.
1. Aconjugate formula
2. Bbuffer solution
3. Cbasic indicator
4. D(none of the above)
5__________ is the process used to determine buffering capacity (how much of an acid or base has to be added before buffers are no longer effective).
1. ATitration
2. BBurette
3. CBuffer testing
4. DIndication
6Buffers work because they dissociate so completely in water, they acidify the substance, offsetting the addition of any bases.
1. AVerdadeiro
2. BFalso
7To create a buffer in an acidic substance, you should add a conjugate base. This forms an acid-base pair.
1. AVerdadeiro
2. BFalso