QUALITATIVE ANALYSIS OF SIMPLE INORGANIC SALT _______________________________________________________________ CATIONS: Pb2+ ‚Hg2+ ‚Cu2+ ‚Cd2+ ‚ Ag+ ‚ Fe2+ ‚ Fe3+ ‚ Al3+ ‚ Zn2+ ‚ Mn2+ ‚ Co2+ ‚ Sr2+ ‚ Ba2+ ‚ Mg2+ ‚ NH4+ ANIONS: CO32- ‚ S2- ‚ SO32- ‚ SO42- ‚ NO2- ‚ NO3- ‚ Cl- ‚ Br2- ‚ PO43- ‚ CH3COO- _______________________________________________________________ PRELIMINARY TESTS 1. Note the state (amorphous or crystalline) and colour of salt. 2. Test the solubility of the salt in the following solutions:
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SOLUTIONS TO SUGGESTED PROBLEMS FROM THE TEXT PART 2 3.5 2 3 4 6 15 18 28 34 36 42 43 44 48 49 3.6 1 2 6 12 17 19 23 30 31 34 38 40 43a 45 51 52 1 4 7 8 10 14 17 19 20 21 22 26 r’(θ) = cosθ – sinθ 2 2 cos θ – sin θ = cos2θ z’= -4sin(4θ) -3cos(2 – 3x) 2 cos(tanθ)/cos θ f’(x) = [-sin(sinx)](cosx) -sinθ w’ = (-cosθ)e y’ = cos(cosx + sinx)(cosx – sinx) 2 T’(θ) = -1 / sin θ x q(x) = e / sin x F(x) = -(1/4)cos(4x) (a) dy/dt = -(4.9π/6)sin(πt/6) (b) indicates the change in depth of water (a) Graph at
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3. NO2 - 4. BeF2 molecule lewis diagram e- tally shape bond angle 5. SiH4 6. SeH2 7. PF5 8. SCl6 Name: _________________________________ Predicting Molecular Geometry and Hybridization 1. In each case‚ predict (a) the approximate bond angle(s)‚ (b) the hybridization around the underlined atom. (Note: It is helpful to first sketch the Lewis stucture!) Molecule or Ion (1) OF2 (2) H2CO (3) NO2+ (4)
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cause breathing problems‚ trigger asthma‚ reduce lung function and cause lung diseases. Epidemiological studies have shown that symptoms of bronchitis in asthmatic children increase in association with long-term exposure to NO2. Reduced lung function growth is also linked to NO2 at concentrations. SO2 can affect the respiratory system and the functions of the lungs‚ and causes irritation of the eyes. Inflammation of the respiratory tract causes coughing‚ mucus secretion‚ aggravation of asthma and chronic
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Description Two scientists came to a conclusion: an acidic solution behaves as proton donors‚ which is in the form of a hydrogen ion. This is what we call the Bronsted-Lowry definition of an acid‚ which is the main focus of this lesson. !!!What is a Bronsted-Lowry Acid? What makes a solution an acid? There are different definitions proposed by different scientists about what makes an acidic solution. Particularly‚ there were two scientists who independently proposed essentially the same theory
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Chapter 1 MULTIPLE CHOICE QUESTIONS Topic: Atomic Orbitals 1. A) B) C) D) E) In quantum mechanics a node (nodal surface or plane) is: a place where Ψ is negative. a place where Ψ is positive. a place where Ψ = 0. a place where Ψ2 is large. a place where Ψ2 is negative. Ans: C Topic: Atomic Orbitals‚ Molecular Orbitals 2. When the 1s orbitals of two hydrogen atoms combine to form a hydrogen molecule‚ how many molecular orbitals are formed? A) 1 B) 2 C) 3 D) 4 E) 5 Ans:
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1 UNIT 9 CHEMICAL KINETICS 1. (c) mole 1–1 sec–1 The rate law for a reaction A + B →products‚ is rate = k [A]1[B]2. 7. Then‚ which one of the following statements is false ? (a) If [B] is held constant while [A] is doubled‚ the reaction will proceed twice as fast. (b) If [A] is held constant while [B] is reduced to one quarter‚ the rate will be halved (c) If [A] and [B] are both doubled‚ the reaction will proceed 8 times as fast. 2. Fro a first order reaction‚ a straight
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The Advanced Placement Examination in Chemistry Part II - Free Response Questions & Answers 1970 to 2007 Thermodynamics Teachers may reproduce this publication‚ in whole or in part‚ in limited print quantities for non-commercial‚ face-to-face teaching purposes. This permission does not apply to any third-party copyrights contained within this publication. Advanced Placement Examination in Chemistry. Questions copyright© 1970-2007 by the College Entrance
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CHEMISTRY (Theory) Time allowed : 3 hours General Instructions: (i) All questions are compulsory. Maximum Marks : 70 (ii) Marks for each question are indicated against it. (iii) Question numbers 1 to 8 are very short-answer questions and carry 1 mark each. (iv) Question numbers 9 to 18 are short-answer questions and carry 2 marks each. (v) Question numbers 19 to 27 are also short-answer questions and carry 3 marks each. (vi) Question numbers 28 to 30 are long-answer questions and carry 5 marks
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General Papers ARKIVOC 2006 (i) 109-118 Synthesis and primary antiviral activity evaluation of 3-hydrazono-5-nitro-2-indolinone derivatives Nalan Terzioğlu *a‚ Nilgün Karalı a‚ Aysel Gürsoy a‚ Christophe Pannecouque b‚ Pieter Leysen b‚ Jan Paeshuyse b‚ Johan Neyts b‚ and Erik De Clercq b a Istanbul University‚ Faculty of Pharmacy‚ Department of Pharmaceutical Chemistry‚ 34116‚ Istanbul‚ Turkey b Rega Institue of Medical Research‚ Katholieke Universiteit Leuven‚ B-3000 Leuven‚ Belgium E-mail:
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