help? whats in my test tubes pre lab 3M H2SO4, 6M HCl, 6M NH3, 6MNaOH, 0.1MAl(NO

Question

help? whats in my test tubes pre lab

3M H2SO4, 6M HCl, 6M NH3, 6MNaOH, 0.1MAl(NO3)3, 0.1M Cu(NO3)2, 0.1 M Ca(NO3)2, 0.1M Cr(NO3)3, 0.1M Ba(NO3)2, AND 0.1M BiCl3 in 3M HCl

Which solutions should you be able identify by simple observations Ammonia gas and hydrogen chloride gas can react to form a white solid smoke according to a Lewis acid-base reaction. Write this chemical reaction with state of matter included. What is the molar mass of hydrogen chloride, ammonia, and Nitrogen (the primary ingredient of air)? Explain how you can use part a and b to determine which test tube is hydrochloric acid and which is ammonia. Be sure to include a discussion of gas densities Outline the procedure you will follow in identifying the solutions that will require mixing tests Be as specific as you can about what you will look for and what conclusions you will be able to draw from your observations Bring the original to lab. You may turn in a copy of this pre-lab.

Explanation / Answer

Ans: In the given data three types of components are observed

ACIDS: H2SO4, HCl

BASES: NH3, NaOH

SALTS: 0.1MAl(NO3)3, 0.1M Cu(NO3)2, 0.1 M Ca(NO3)2, 0.1M Cr(NO3)3, 0.1M Ba(NO3)2, AND 0.1M BiCl3 in 3M HCl

Observations:

Acids like HCl was identified reacting with NH3 gave white solid vapour and H2SO4 is more viscous on reaction with NaOH forms Na2SO4 Salt as ppt in test tube.

Bases like NH3 and NaOH was also identified by reacting with respective acids

Salts = Copper nitrate is intense blue coloured substance

             Aluminium nitrate is white crystalline substance

             Calcium nitrate is colourless powder salt absorbs moisture

             Chromium nitrate is dark violet hydrated salt and shows green colour in anhydrous condition

              Barium nitrate is white solid and soluble in water

              Bismuth chloride is white crystalline substance and on reaction with water produce bismuth oxychloride

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