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You would likely add a weak acid. Trying to produce a small change in pH with a strong acid would require a very small amount of acid, which would be difficult to measure properly.

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Is doxorubicin is water soluble?

Doxorubicin has a solubility of 10mg in 1 ml of water, which should be warmed slightly.


How do you 20 vol with 40vol perxcide?

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How do you use phenophthalein to test for acids and bases?

Any titration is done to find the "equivalence point" - where the amount of titrant (strong base in your question) is equal to the amount of unknown (weak acid in your question). When the two are equal, the base has converted all the weak acid into it's conjugate base. An indicator should change color over the pH range that includes the equivalence point. In your question, when using a weak acid, what's left at the equivalence point is a strong conjugate base. The solution will have a slightly basic pH. Phenolphthalein has a colorless to pink transition over the range of pH 8-9.6, which is slightly basic. So it changes color across the equivalence point. So it makes a good indicator for the scenario you asked about. Thymol blue (color change slightly lower pH, weaker base, stronger acid) or Thymolphthalein (color change slightly higher pH, stronger base, weaker acid) may also be good choices.


How often do you change sanitizer solution?

Sanitizer solution should be changed every 2-4 hours, or more frequently if it becomes visibly dirty or contaminated. It's essential to follow proper hygiene protocols to maintain a clean and safe environment.

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