class 12th chemistry investigatory project on preparation of potash from aluminium scrap. already in required format, bonafide certificate format is also provided along withFull description
Project report on Ferric AlumFull description
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Descripción: Publicaciones didácticas del Ministerio de Educación de Argentina
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Caustic soda and caustic potash are used in a large number of manufacturing processes. The chemicals are available in several grades depending on their intended use. The test methods list…Descripción completa
Turbidity is caused by particles suspended or dissolved in water. High turbidity can significantly reduce the aesthetic quality of lakes and streams, having a harmful impact on our lives. Many aluminium salts are used to treat turbidity problem .The
This was my 3rd year Chemical Engineering design project submission about the design of a Rod Mill for a potash processing facility. The design of a rod mill for a potash processing plant at Bou...
This was my 3rd year Chemical Engineering design project submission about the design of a Rod Mill for a potash processing facility. The design of a rod mill for a potash processing plant…Full description
PREPARATION OF POTASH ALUM
NAME : SWATHI RAJANNA CLASS : ROLL NO : YEAR : 2011 2011 ± 2012
CERTIFICATE This is to certify that , this project titled 'PREPARATION OF POTASH ALUM ' was originally carried out by SWATHI RAJANNA , who is a student of Sri Vani Public School in the chemistry laboratory .
Signed By : Date :
ACKNOWLEDGEMENT I thank our chemistry teacher _____________ for his/her support and guidance . The lab attender ________________ for his constant help and the principal ___________ for giving me an opportunity to work in the laboratory.
SWATHI RAJANNA
INDEX
Certificate Acknowledgement Introduction Aim
Materials Required
Theory
Reactions
Procedure
Observations
Aim To prepare potash alum from aluminium scrap
MATERIALS REQUIRED
250 ml flask
Funnel
Beaker
Scrap aluminium or cola can
Potassium hydroxide solution (KOH)
6 M Sulphuric Acid (H2SO4)
Water Bath
Ethanol
THEORY
Aluminum metal is treated with hot aqueous KOH solution. Aluminium dissolves as potassium aluminate, KAl(OH)4, salt.
Potassium aluminate solution on treatment with dil. Sulphuric acid first gives precipitate Al(OH)3, which dissolves on addition of small excess of H2SO4 and heating.
REACTIONS
PROCEDURE
Take aluminum scrap (0.5 g) and cut into very small pieces. Place it in a beaker (250 ml) and carefully add potassium hydroxide solution (1.75 g in 15 ml water). Heat the beaker gently and cover it with a watch glass. Continue heating till all the aluminum has dissolved and have an ashcolored solution. (Do not heat to dryness). Filter the warm solution carefully through a thin
OBSERVATION Mass of aluminium metal
=_______________g
Mass of potash alum
=___________________g
Theoretical yield of potash alum =___________________g Percent yield
=_______________%
RESULT Potash alum of % yield was prepared from aluminium scrap.
