01. Some chemicals are acids and some are bases. We can test these chemicals with different Indicators and determine if they are an acid or a base. Cabbage juice is an example of an
acid-base Indicator. If a solution of lemon juice is poured into purple cabbage juice, it will turn red. This indicates that it is an acid. If drain cleaner is added to cabbage juice, it will
turn green indicating that it is a base.
Red
Purple
Green
base
er
Other materials can also be used as indicators if they change color in the presence of an acid or base. Litmus paper and phenolphthalein are commonly used in a chemistry lab but
many other plant materials such as beets, blackberries and blueberries will also work
A student was given an unknown liquid. She tested it and recorded the following observations
Uus per
Reaction w
Bu
Based on the Information above, what color would this liquid most likely turn using a cabbage juice indicator?
Answers: 3
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Identify the limiting reactant when 9.65-g h2so4 reacts with 6.10-g of naoh.the equation is h2s04 + 2naoh = 2h2o + na2so4• what is the theoretical yield of na2so4, in grams? • how much of the excess reagent will remain after the reaction has been completed? • if 10.5-g of na2so4 are actually recovered experimentally, what is the percent yield?
Answers: 3
01. Some chemicals are acids and some are bases. We can test these chemicals with different Indicato...
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