water streams. The objective of is to evaluate the ability of the EFC process in reducing the volume of a 5 wt% CuSO4 aqueous waste water stream significantly while simultaneously producing potable (drinking) water. In order to evaluate this effectiveness‚ the yield and purity of only the ice product is investigated before and after a number of wash cycles. A 1000g solution of 5 wt% CuSO4 underwent crystallization for one hour with the use of ice crystal seeding and the agitation of a stirrer at
Premium Water Crystal Concentration
It is the Cu(OH)2‚ with the reaction‚ (6) Cu2+(aq) + 2NH3 (aq) + 2H2O(l) ⇌ Cu(OH)2 (aq) + 2NH4+ (aq) However‚ after NH3 was added in excess‚ a deep blue complex solution was formed‚ and the precipitate was dissolved. But upon the addition of HCl‚ the color of the solution returned to pale
Premium Harvard University College John F. Kennedy
CAWANGAN PULAU PINANG SKEMA JAWAPAN MODUL LATIHAN BERFOKUS SPM 2013 KIMIA KERTAS 1 454111 www. myschoolch ild ren .com ::‚ Muat turun (percuma) soalan lain di : www.myschoolchildren.com Muat turun (percuma) skema lain di www.myschoolchildren.com MAJLIS PENGETUA SEKOLAH MALAYSIA 1 1 B 11 D 21 B 31 C 41 A 2 D 12 B 22 A 32 A 42 A 3 D 13 D 23 D 33 B 43 D 4 A 14 B 24 C
Premium Sulfuric acid Metal Iron
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
and vinegar‚ Gatorade‚ coffee and salad. The metals that were used in the lab were ‚ brass ‚ copper‚ iron‚ and aluminum. Brass is not a pure substance because it is an alloy consisting of copper(cu) and zinc (zn). Copper is a pure substance and it is on the periodic table under the symbol Cu. Iron is also a pure substance and on the periodic table as Fe. Aluminum is another pure
Premium
Adopt an Element Purpose To research two elements on the periodic table and create a neat‚ colorful‚ and creative 8.5’ x 11’ poster on colored paper that highlights the following information: • Symbol (lettering must be 11 cm high‚ minimum must be placed in the left hand corner) • Name of element (lettering must be 2 cm high‚ minimum Must be underneath the symbol.) • Atomic number (lettering must be 2 cm high‚ minimum Must be placed in the top right hand corner) •
Free Periodic table Chemical element Atomic number
HKDSE CHEMISTRY – A Modern View (Second Edition) (Chemistry) Coursebook 4A Suggested answers Chapter 36 Rate of chemical reaction Page Number Class practice 1 Think about 5 Chapter exercise 5 Chapter 37 Factors affecting rate of reaction Class practice 11 Think about 14 Writing practice 14 Chapter exercise 14 Chapter 38 Molar volume of gases at room temperature and pressure (r.t.p.) Class practice 21 Self-test 24 Think about 26 Chapter exercise 27 Part exercise 34 Chapter 39 Dynamic equilibrium
Premium Mole Carbon dioxide Hydrochloric acid
Cold H2O Hot H2O Litmus Test Dilute HCl Dilute NaOH Mg silver none none none none basic Bubbled none Cu copper none Color change none none none none none Zn silver none none none none none bubbled none MgO white none none dissolve separates basic mixes milky CuCO3 green none black dissolve separates acidic mixes blue Cu(NO3)2 blue none melt dissolve dissolve acidic Mix/green none NaCl white none Sizzle dissolve popping none
Premium Chlorine Sodium chloride Sodium
1. Iron (IIII) and copper (II) sulfate solution Fill a small test tube halfway with copper (II) sulfate solution. Add a 2.0 gram iron rod to the solution and observe the reaction. 2 Fe + 3 CuSO4 = 3 Cu + Fe2(SO4)3 The new product is iron (III) sulfate‚ it contains the Fe 3+ ion which is brown. Lead (II) nitrate and potassium iodide solutions Pour about 2.0 mL of lead (II) nitrate into the test tube. Add 5 to 10 drops of potassium iodide solution to the test tube and record your observations
Premium Hydrogen Magnesium Oxygen
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