Latest videos by chemiguru

2E5 Memories Posted by: chemiguru Video duration: 339 seconds To remember all the times that we have spent together as a class! Related: 2e5, wrs Testing anion - carbonate ion Posted by: chemiguru Video duration: 43 seconds If unknown solution given is coloured eg blue solution / green solution, and a ppt is formed on adding silver chloride or barium nitrate, make sure you allow the mixture to stand for a few minutes and observed the precipitate that settles down to the bottom of the test tube. The white ppt would become very obvious to you. Related: anion, carbonate Heating of potassium nitrate Posted by: chemiguru Video duration: 64 seconds Take note: - Nitrate salts melt upon heating- - Nitrate salts has a crystalline appearance Related: heating, nitrate, potassium Testing anion - iodide ion Posted by: chemiguru Video duration: 23 seconds The yellow ppt formed is lead(II) iodide Related: anion, iodide Heating of zinc carbonate Posted by: chemiguru Video duration: 74 seconds The solid changes from white to yellow on heating. It changes back to white on cooling. CO2 produced -- turns lime water chalky. Related: carbonate, heating, zinc Testing cation - copper with aq NH4 Posted by: chemiguru Video duration: 29 seconds Testing copper cation with aq NH4 Related: cation, copper, nh4 Testing anion - chloride ion Posted by: chemiguru Video duration: 32 seconds The white ppt form in this case is silver chloride Related: anion, chloride Heating of lead(IV) oxide Posted by: chemiguru Video duration: 58 seconds Heating of lead(IV) oxide Related: heating, leadiv, oxide Heating of ammonium chloride Posted by: chemiguru Video duration: 45 seconds Ammonium chloride has the same result as ammonuium carbonate. Related: ammonium, chloride, heating Heating of lead carbonate Posted by: chemiguru Video duration: 51 seconds Heating of lead carbonate Related: carbonate, heating, lead Heating of red lead(II) oxide Posted by: chemiguru Video duration: 49 seconds Heating of red lead(II) oxide Related: heating, leadii, oxide, red Testing cation - iron(III) with NaOH Posted by: chemiguru Video duration: 25 seconds Testing iron(III) cation with NaOH Related: cation, ironiii, naoh Testing anion - nitrate ion Posted by: chemiguru Video duration: 86 seconds Nitrate anion is always tested with either Barium chloride or Barium sulphate. The white ppt form is always barium sulphate Related: anion, nitrate Testing anion - sulphate ion Posted by: chemiguru Video duration: 56 seconds The ppt form is barium sulphate Related: anion, sulphate Testing cation - calcium with NaOH Posted by: chemiguru Video duration: 20 seconds Testing calcium cation with NaOH Related: calcium, cation, naoh Testing cation - ammonium with NaOH Posted by: chemiguru Video duration: 47 seconds Testing ammonium cation with NaOH Related: ammonium, cation, naoh Testing cation - zinc with NaOH Posted by: chemiguru Video duration: 36 seconds Add a little NaOH / NH3(aq), observe for formation of precipitate, then add excess to see if precipitate is soluble. Precipitate is due to formation of metal hydroxide Related: cation, naoh, zinc Heating of ammonium carbonate Posted by: chemiguru Video duration: 54 seconds Note: Appearance - carbonates are powdery Cheating test - use acid to test for effeversence Related: ammonium, carbonate, space Testing cation - aluminium with NaOH Posted by: chemiguru Video duration: 33 seconds Testing aluminium cation with NaOH Related: aluminium, cation, naoh Heating of copper(II) carbonate Posted by: chemiguru Video duration: 20 seconds Heating of copper(II)carbonate Related: carbonate, copper, heating Testing cation - iron(III) with aq NH4 Posted by: chemiguru Video duration: 20 seconds Testing iron(III) cation with aq NH4 Related: cation, ironiii, nh4 Testing cation - iron(II) with aq NH4 Posted by: chemiguru Video duration: 24 seconds Testing iron(II) cation with aq NH4 Related: cation, ironii, nh4 Testing cation - zinc with aq NH4 Posted by: chemiguru Video duration: 25 seconds Testing zinc cation with aq NH4 Related: cation, nh4, zinc Testing cation - calcium with aq NH4 Posted by: chemiguru Video duration: 23 seconds Testing calcium cation with aq NH4 Related: calcium, cation, nh4 Testing cation - copper with NaOH Posted by: chemiguru Video duration: 25 seconds Testing copper cation with NaOH Related: cation, copper, naoh   Movie Trailer videos Search for a video theme of your choice. You like it? Share it!

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