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(a) The diagram below represents a set up that was used to obtain dry nitrogen from air.
Study it and answer the questions that follow:
(i) Name solid Q.
(ii) What is the purpose of sodium hydroxide?
(iii) Write an equation for the reaction which took place in tube P.
(iv) Give the name of one impurity present in the nitrogen gas obtained.
(v) Give a reason why liquid nitrogen is used for storage of semen for artificial insemination.
(b) The set up below was used to prepare nitric (V) acid.
(i) Give the name of liquid R.
(ii) Write an equation for the reaction which took place in the glass retort.
Explain the following:
I)Nitric (V) acid is stored in dark bottles.
II)The reaction between copper metal with 50% nitric (V) acid (one volume of acid added to an equal volume of water) in
an open test-tube gives brown fumes.