Why is ammonia-ammonium chloride buffer added?
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What is the reaction that occurs during the titration?
Explain the Chemical change?
What is positive testing in relation to chemistry? For example, the sentence reads "Sample solutions are solutions known to contain one of each of the following ions, silver ion, Ag+(aq), barium ion, Ba2+(aq), and iron (III) ion, Fe3+(aq). Testing solutions are the solutions containing a polyatomic ion that can react with one of the metal ions to give a positive test." I am then asked to define what a "positive test" is. I am currently a student who is pretty new to chemistry, please try and make your answer as simply as possible. Thanks for the help.
Which gas is used in refrigeration plants ?
What is oxy-hydrogen flame ?
Give the principle of potentiometer titration.
What is General Properties of Acids ?
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Differentiate between organic and inorganic chemistry?
What is the prime constituents of cement?
What is Filtration ?
What test will you use to distinguish cotton from wool ?
what is the equation for iodine and starch when they are combined?