LAB 3: QUALITATIVE ANALYSIS Part 2- ANIONS Sameera Feroz Butt Lab Partner: Ram Soni Thursday January 30‚ 2014 Leilani Morales CHEM1131-02 OBJECTIVE The objective of this experiment was to use qualitative analysis to determine the chemical characteristics of four known anions by systemic confirmatory testing. The chemical characteristics observed were to be used to identify an unknown sample. Sulphuric acid was to be added to a carbonate solution and an effervescent reaction would
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Ionic Bonding Puzzle Lab Introduction When metals and non-metals chemically react‚ the atoms will tend to form ions or charged atoms. Ions form because electrons are either gained or lost. Metals will generally form cations or positive ions‚ since they tend to donate electrons Non-metals will form anions or negative ions‚ since they tend to accept electrons. Activity In this activity you will create models of ionic compounds and observe the chemical formula of the binary molecules you
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3:2 soil and finally sedentary soil having the lowest pH of them all. The pH of soil pH is affected by both acid and base-forming ions. The acid forming cations are positively charged ions they commonly include hydrogen ions‚ aluminium ions ‚and iron(II and III ions). Base forming cations commonly comprise of calcium ions‚ magnesium ions‚ sodium ions and potassium ions. It is also known that the CEC is positively correlated with soil pH. As the dilution of the soil solution increases‚ the pH is also
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All Bicarbonate were in soluble‚ these I thought were soluble‚ until I moved it over dark paper. Carbonate and Hydroxides were all insoluble percipitante. Negative Ion (Anions) | Positive Ions (Cations) | Solubility of Compounds | All negative ions are_____with | Alkali ions ( Li+‚ Na+‚ K+ etc) | Soluble | All negative ions are ____ with |
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reaction? Ni (s) +Pb2+(aq) → Ni2+(aq) +Pb(s) External circuit Ion movement in solution A. electrons move from Ni to Pb Pb2+(aq) move away from Pb(s) B. electrons move from Ni to Pb Pb2+(aq) move toward Pb(s) C. electrons move from Pb to Ni Ni2+(aq) move away from Ni(s) D. electrons move from Pb to Ni Ni2+(aq) move toward Ni(s) (2) 2. Which processes occur during the electrolysis of molten sodium chloride? I. Sodium and chloride ions move through the electrolyte. II. Electrons move through the
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substances that become ions in solution and acquire the capacity to conduct electricity. Electrolytes are present in the human body‚ and the balance of the electrolytes in our bodies is essential for normal function of our cells and our organs. Common electrolytes that are measured by doctors with blood testing include sodium‚ potassium‚ chloride‚ and bicarbonate. The functions and normal range values for these electrolytes are described below. Sodium Sodium is the major positive ion (cation) in fluid
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electricity‚ the charge is carried by ions moving through the solution. Ions are atoms or small groups of atoms that have an electrical charge. Some ions have a negative charge and some have a positive charge. Citric Acid Citric acid is a weak organic acid with the molecular formula C6H8O7‚ which means a molecule of the acid contains six carbon atoms‚ eight hydrogen atoms‚ and seven oxygen atoms. When it is dissolved in water‚ it partially ionizes to yield three H+ ions (hydrogen atoms which are missing
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to the positive ions in metal have been considered. (i.e. the electrons moves in a periodic potential provided by lattice). If the electron moves through these ions‚ it experiences varying potentials. The potential of an electron at the positive ion site zero and is maximum in between two ions. i.e. the potential experienced by an electron varies periodically with the same period as the lattice. The potential is negative because of attractive force between electrons and positive ions. Along X-
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only one shell. 9. What is an ion? An ion is an atom that has become stable by gaining or losing electrons. 10. A positive ion is called cation and a negative ion is called anion. 11. Ionic bonds form between a metal and a non metal. 12. Covalent bonds form between two non-metals. 13. What is a polyatomic ion? How do you recognize a polyatomic ion in the NAME of a compound? A polyatomic ion is a group of atoms which act as a single ion. All polyatomic ions (except ammonium and hydroxide)
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Complex Ion Equilibria • The dissociation of complex ions can be represented similarly to equilibria. Simultaneous Equilibria: Solubility Product Constants and Complex Ion Equilibria → Ag + + 2 NH Ag(NH3 ) +2 ← 3 [Ag ][NH ] = [Ag(NH ) ] 2 + Kd 3 + 3 2 → Cu 2+ + 4 NH Cu(NH 3 ) 24+ ← 3 [Cu ][NH ] = [Cu(NH ) ] 4 2+ Kd Complex Ion Equilibria 3 2+ 3 4 3 Complex Ion Equilibria • A metal ion coordinated to several neutral molecules or anions forms compounds called complex ions. • Familiar
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