chemical reactions. Balancing Chemical Equations Balance the equations below: 1) ____ N2 + ____ H2 ____ NH3 2) ____ KClO3 ____ KCl + ____ O2 3) ____ NaCl + ____ F2 ____ NaF + ____ Cl2 4) ____ H2 + ____ O2 ____ H2O 5) ____ Pb(OH)2 + ____ HCl ____ H2O + ____ PbCl2 6) ____ AlBr3 + ____ K2SO4 ____ KBr + ____ Al2(SO4)3 7) ____ CH4 + ____ O2 ____ CO2 + ____ H2O 8) ____ C3H8 + ____ O2 ____ CO2 + ____ H2O 9) ____ C8H18 + ____ O2 ____ CO2 + ____ H2O 10) ____ FeCl3 + ____ NaOH ____
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Methods: I placed ten drops of each substance into different wells. Then I took Magnesium and put it in the first one. I put Zinc into the second one. I placed lead into the third and fourth one‚ and put iron into the fifth one. Results: See Table Below. Discussion: I learned about different redox reactions. Questions: A. Sodium‚ Magnesium‚ Zinc‚ Iron‚ Lead and Copper. In descending order. B. Before Copper in descending order. C. If a reaction takes place then
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To find the redox reactions between a metal and dilute acid‚ metal-metal ion displacement and halogen displacement reaction. Materials: Test tubes (8)‚ pea size samples of the following metals; copper‚ lead‚ magnesium and zinc (10 ml)‚ 2M hydrochloric
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Observe what happens when magnesium metal is placed in 1.0 M HCl solution. 2. Observe what happens when zinc metal is placed in 1.0 M copper nitrate solution. 3. Observe what happens when copper metal is placed in zinc nitrate solution. 4. Observe whether 0.1 M iron (III) chloride solution or iron (II) sulfate decolorize when added to 0.1 M potassium permanganate. 5. Add
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Magnesium Magnesium Chloride + Hydrogen 2HCl(aq) + 2Mg(s) 2MgCl(aq) + H2(g) Sulphuric acid + Zinc Zinc Sulphate + Hydrogen H2SO4(aq) + Zn(s) ZnSO4(aq) + H2(g) Nitric acid + Aluminium Aluminium Nitrate + Hydrogen 2HNO3(aq) + 2Al(s) 2AlNO3(aq) + H2(g) 2. ACID + BASE –––––––> SALT + WATER Hydrochloric acid + Copper II Oxide Copper II Chloride + Water HCl(aq) + CuO(s) CuCl(aq) + H2O(l) Nitric acid + Aluminium Oxide Aluminium Nitrate + Water 6HNO3(aq)
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of proper chemical reactions. Equipment and Materials: ← Copper Metal (penny) ← Nitric Acid (HNO3)(aq) ← Sodium Hydroxide (NaOH)(aq) ← Sulfuric Acid (H2SO4)(aq) ← Ammonium Hydroxide (NH4OH)(aq) ← Hydrochloric Acid (HCl)(aq) ← Zinc powder ← 2 100 ml Beakers ← 250 ml Waste Beaker ← 400 ml Beaker ← Filter paper ← Plastic Dropper ← 250 ml Erlenmeyer Flask ← Forceps ← Plastic Funnel ← Red Litmus paper ← Spatula ← Steel Wool
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analyze bromide‚ chloride‚ nitrate‚ carbonate and sulfate radicals Lab 4: Qualitative analysis of Basic Radicals present in drugs and dosage form Part 1: Examples of Drugs and dosage forms having basic radicals Part 2: How to analyze aluminium‚ iron‚ zinc‚ potassium‚ calcium‚ sodium radical Lab 1 Principle of identification of Inorganic drugs‚ compound‚ ions which is already identified but unknown to the student Principle What are the components of the principle of an experiment? Explanation
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tin‚ 5% copper‚ 1% zinc – overcame expansion problems History • 1960’s – conventional low-copper lathe-cut alloys • smaller particles – first generation high-copper alloys • Dispersalloy (Caulk) – admixture of spherical Ag-Cu eutectic particles with conventional lathe-cut – eliminated gamma-2 phase Classification According to content – Silver amalgam: Silver more than 65% – Copper amalgam: 70% Hg and 30% Cu According to presence or absence of Zn Zinc containing alloys –
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calcium sulfide. Δ Ca (s) + S (s) → CaS (s) b. Hydrogen gas reacts with fluorine gas to produce hydrogen fluoride gas. H2 (g) + F2 (g) → 2 HF(g) c. Solid aluminum metal reacts with aqueous zinc chloride to produce solid zinc metal and aluminum chloride. (Check the Solubility Rules to determine the phase of matter of aluminum chloride.) 2 Al (s) + 3 ZnCl2 (aq) → 2 Zn (s) + 2 AlCl3 (aq) 4. Translate the following chemical equations
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The objective of this lab was to. First‚ we measured out 2.00g of granular zinc and 2.03g of iodine crystals and added them together into a boiling tube‚ which we labeled "R". After‚ we added a boiling chip into a large test tube labeled "P" and we also labeled an empty regular sized test tube with a "C". When we added 5mL of acetic acid to tube R‚ the solution turned red and was hot. After we add 30 drops of the red solution into tube C and continued to swirl tube R‚ the solution became
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