2018 CHM202 Analytical Chemistry TMA 3 Question and Answer

Question 1 why preparing a stock solution of ammonium nitrate, a technologist weighed 0.5 g of the substance which actually is 0.7 g with a faulty analytical balance the types of error that alcohol is called_____?

Answer is instrumental errors

Question 2 at equivalence point, the H+_______?

Answer is just sufficient today complete reaction to all OH

Question 3: In_____ the metal and lewis acid?

Answer is complexometric titration

Question 4: it is important that a titration have large equilibrium constant so that________?

Answer is each editions of titrant is completely use or by the analyte

Question 5 sudden change in the colour of an indicator used in titration react and be used for?

Answer is detecting completions of a titration reaction.

Question 6 random distribution of the components analytical sample can be achieved through_____?

Answer is mixing solid laboratory sample

Question 7 acid base titration monitors change in______?

Answer is pH

Question 8 including titration curve ph versus the volume of the titrant how many variable regions are there?

Answer is three

Question 9 standard solution is prepared from______?

Answer is primary standard

Question 10 that point in an acid-base titration when the amount of acid added to the base is the exact amount necessary for stoichiometric reaction is_______?

Answer is equivalent point

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