oxidation half reaction‚ the reduction half reaction‚ and then balance the equation by the method of oxidation-reduction showing all electrons transfers. 1.Mg + HCl ( MgCl2 + H2 2.Fe + V2O3 ( Fe2O3 + VO 3.KMnO4 + KNO2 + H2SO4 ( MnSO4 + H2O + KNO3 + K2SO4 4.K2Cr2O7 + SnCl2 + HCl ( CrCl3 + SnCl4 + KCl + H2O 5.KMnO4 + NaCl + H2SO4 ( Cl2 + K2SO4 + MnSO4 + H2O + Na2SO4 6.K2Cr2O7 + H2O + S ( SO2 + KOH + Cr2O3 7.KClO3 + C12H22O11 ( KCl + H2O + CO2 8.H2C2O4 + K2MnO4 ( CO2 + K2O + Mn2O3
Free Oxidizing agent
Magnesium Sulfate 16 MnO2 Manganese (IV) Oxide 17 Ca3(PO4)2 Tricalcium Phosphate 18 NaOH Sodium Hydroxide 19 HCl Hydrogen Cloride 20 Ba(HSO3)2 Barium Bisulfite 21 HNO3 Hydrogen Nitrate 22 FeSO3 Iron (II) Sulfite 23 Al2S3 Aluminum Sulfide 24 KNO3 Potassium Nitrate Part B Write the formulas for the following compounds: 1 potassium cyanide KCN
Premium Chemistry Oxygen Ion
1. The property of metals by which they can be beaten in to thin sheets is called- a. malleability b. Ductility c. conduction d. Expansion Ans . 1. (a) 2. Which one of the following is metal? a. C b. N c. Na d. O Ans . 2. (c) 3. Which one of the following is non metal? a. Zn b. Al c. Fe d. N Ans . 3. (d) 4. All materials shown property of malleability expect a. Iron b. Graphite c. Aluminium d. Silver Ans . 4. (b) 5. Which one of the following is a good conductor of electricity
Premium Oxygen Sulfuric acid
Test Biuret Test Reagents CuSO4 sol’n‚ diluted NaOH Test for Intact proteins and protein hydrlysates (at least tripeptide‚ 2 peptide bonds Result Pink to violet blue color Ninhyrin Test 1‚2‚3-indanetrione monohydrate or triketohydintene hydrate‚ ethanol Alpha- amino group (usually a general test for amino acids) Xanthoproteic Test Conc. HNO3‚ conc. NaOH For W‚F‚Y (aromatic except for H) Blue to blue-violet Oxidative decarboxylation color & deamination
Premium Amino acid Protein Ammonia
M HCl 0.1 M K2CrO4 Steps 7 and 8 INITIAL COLOR + 1 M HCl + 0.1 M Ba(NO3)2 + 1 M NaOH 0.1 M K2Cr2O7 Step 9 0.1 M K2CrO4 0.1 M K2Cr2O7 Add 0.1 M Ba(NO3)2 Table 5 Equilibrium Involving Copper (II) Complexes 0.1 M CuSO4 + 3 DROPS NH3 + MORE NH3 1 M HCl ADDED
Premium Chemistry Experiment Hypothesis
Determining the Percentage of Copper in a Copper Ore Aim: To determine the percentage of copper present in malachite. Hypothesis: That the percentage of copper in the malachite will be four percent. Materials: 2 x 250mL beaker‚ pestle‚ malachite‚ sulfuric acid‚ water‚ 2 x filter paper‚ funnel‚ filter stand‚ Safety Precautions: Wear safety glasses at all times when dealing with chemicals and apron to avoid ruining clothes. Method: Record the mass of the malachite sample. Place the malachite
Premium Copper Sulfuric acid Filter paper
Identification and Recreation of Unknown White Compound #643p November 13‚ 2012 INTRODUCTION: The identity of the unknown solid white compound is determined and verified through a series of tests which uncover physical and chemical properties necessary for identification. A new sample of the same compound is then created to further prove the accuracy of the identification. The compound must be identified in order to be used. For example‚ KCl is used in medicine‚ scientific applications‚ and
Premium Chemistry Chemical substance Chemical compound
carrying out a synthesis reaction. When solutions of potassium iodide and lead (II) nitrate are mixed together crystals of lead iodide are formed according to the following chemical equation: 2 KI (aq) + Pb(NO3)2 (aq) → PbI2 (s) + 2 KNO3 (aq) Procedure: Lead compounds are toxic. If you get any of the solution or solid on your hands‚ wash your hands immediately. Clean
Free Stoichiometry Chemical reaction Chemistry
EXPERIMENT # 14: Exothermic and endothermic reactions Date: 25/06/2012 Name: Meagen Reyes Year 11 PARTS A‚ B and C * For the procedures and equipment needed in these experiments‚ refer to page 73-74 in the STAWA Exploring chemistry stage 2 book Part A: solution process (dissociation) Solutions and their chemical equations | Initial temperature (in Celsius) | Final temperature (in Celsius) | Classification(exothermic or endothermic) | Sodium hydroxide NaOH(s) Na+(aq) + OH-(aq) + Energy
Premium Chemical reaction Thermodynamics Chemistry
Dexter Patrick S. Baltazar Pre-test: Chemical balancing Instruction: Balance each chemical equation by adding a correct coefficient to it. Question 1 __ SnO2 + __ H2 → __ Sn + __ H2O Question 2 __ KOH + __ H3PO4 → __ K3PO4 + __ H2O Question 3 __ KNO3 + __ H2CO3 → __ K2CO3 + __ HNO3 Question 4 __ Na3PO4 + __ HCl → __ NaCl + __ H3PO4 Question 5 __ TiCl4 + __ H2O → __ TiO2 + __ HCl Question 6 __ C2H6O + __ O2 → __ CO2 + __ H2O Question 7 __ Fe + __ HC2H3O2 → __ Fe(C2H3O2)3 + __ H2 Question 8 __ NH3 +
Premium Oxygen Atom Hydrogen