Chemistry in Daily Life Questions and Answers
Organic Chemistry
Chemistry in Daily Life54 A levo rotatory compound 2 chloro 2 phenyl butane is undergoing nucleophilic substitution with OH following SN mechanism The product s obtained is are a leavo rotatory 2 phenyl butan 2 ol c 1 1 Mixture of both a and b b Dextro rotatory 2 phenyl butan 2 ol d None of these
Organic Chemistry
Chemistry in Daily LifeFor the reaction 2 N O5 4 NO2 O2 rate of reaction is given by 1 d N 05 dt NI 2 2d 05 dt d NO dt hr m d 0 dt
Organic Chemistry
Chemistry in Daily Life3 SO NO CH3 CH C Br CH CH OH CH CH CH C Br CH CH CHONG CH CH OH Possible products are 4 SO NO CH3CH OH B major A major 2 J 3 SO NO CH3 48 CH3 C Br CH3CH OH CH 3 CH3 1 4 SO NO CH3 C Br 1 CH3 CH3CH ONa CH3CH OH CH3CH OH A R B
Organic Chemistry
Chemistry in Daily LifeSolvelancer Test Some statements are given about lime calcium oxide below 1 Calcium oxide lime is an amorphous white solid 2 It has a high melting point of 2273 K 3 Heating it at a very high temperature produces white light Which statement s is are true among them Solvelancer Test a Only 1 b Both 1 and 2 c Both 2 and 3 d All are correct a
Organic Chemistry
Chemistry in Daily LifeHydrolysis of ethyl acetate in acidic medium is Fractional order reaction Zero order reaction Pseudo first order reaction hr m Second order reaction
Organic Chemistry
Chemistry in Daily Life58 A Aryl or alkyl monochloride B How many isomers of A will give B When B is a CH3 CH CH3 CH3 c CH3 CH CH CH3 CH3 For example if abcd each are formed from 3 isomers of A in every case fill 3333 i Mg Reflux ii H30 b CH CH Ph PH d Ph CH CH3
Organic Chemistry
Chemistry in Daily LifeCompound 1 is hard to afford but it is possible to synthesis 1 as shown below CI Rot CN Lok 2 propanol OK HN NH 1 1 What is the proper name of the compound 1 Also what is the name that most commonly appears as a in consumer products
Organic Chemistry
Chemistry in Daily Life2 An unknown organic molecule of C4H6Cl4 is characterized by having the following chemical shifts 8 3 9 ppm doublet 4H 8 4 6 ppm triplet 2H Identify the structure of the unknown compound show full work
Organic Chemistry
Chemistry in Daily LifeWhich among the following is not a synthetic detergent CH CH 10 CH OSO Na CH CH 11 SO a hr mir CH3 CH2 16COO CH CH O CH CH OH
Organic Chemistry
Chemistry in Daily LifeWhich of the following practices will not come under green chemistry A If possible making use of soap made of vegetable oils instead of using synthetic detergents B Using H O for bleaching purpose instead of using chlorine based bleaching ager C Using bicycle for traveling small distances instead of using petrol diesel based vehicles D Using plastic cans for neatly preserving substances
Organic Chemistry
Chemistry in Daily LifeAtomic Structure 2 Electronic Structure Question 2 Read the statement lect one A hypothetical ionic compound has the following formula AB2 Which option shows the most likely periodic table groups for the elements A and B O A Group 2 B Group 17 O A Group 2 B Group 18 O A Group 1 B Group 18 OA Group 1 B Group 17
Organic Chemistry
Chemistry in Daily LifeA 1 0L flask contains 2 0 mol of A and no products at 298K Determine the equilibrium concentration of C Given the reaction A g B g 20 g Kc 8 33 10 4 Hint Prepare an ICE table to solve this problem and watch out for coefficients You may assume the change is concentration is negligible small x assumption a 0 094 M Ob 0 24 M Oc 5 6 x 10 M O d 0 15 M O e 0 075 M
Organic Chemistry
Chemistry in Daily LifeIf the equilibrium constant Kc for A B 2C is 0 500 What is the equilibrium constant for 2A 2B 4C is O a 0 500 Ob 1 00 Oc 0 707 Od 0 250
Organic Chemistry
Chemistry in Daily Liferst classify each of the following reactions as one of the five types introduced in this lab ombination decomposition single replacement double replacement or combustion Second write e balanced chemical equation for each reaction H2Oz aq H2O O2 g SO3 g H O 1 Mg s AgNO3 aq C H g O g CO g MgCO3 s MgO s Na O s H O l Na s H O l 2 C3H8O3 1 Br 1 P4 S O g Nal aq Br 1 H SO4 aq Combination Mg NO3 2 aq 2 Ag s Single replacement CO g NaOH aq NaOH aq CO g NaBr aq PBr3 s H O g H g H O g I s
Organic Chemistry
Chemistry in Daily LifeWhich dissolves more quickly fine or course NaCl crystals Explain why
Organic Chemistry
Chemistry in Daily LifeTransmittance 4000 3500 3026 41 3000 2919 89 2500 Unknown 5 2000 Wavenumbers cm 1 1603 94 1459 46 1494 40 1500 1029 95 1080 64 1000 02 38
Organic Chemistry
Chemistry in Daily Life18 Following compound is named as a N N dimethylformamide c N N methylformamide 0 CH C N CH b N N dimethylacetamamidi d N N methylacetamamide
Organic Chemistry
Chemistry in Daily LifeQ 11 The rate of a chemical reaction doubles for every 10 C rise of temperature If the temperature raised by 60 C the rate of the reaction increases by A 16 times B 8 times C 32 times D 64 times E 4 times
Organic Chemistry
Chemistry in Daily LifeWhat is the pH of a 0 0017 M solution of the strong acid HBr aq 2 8 4 8 6 1 3 5
Organic Chemistry
Chemistry in Daily LifeDraw orbital sketches and build the models for a Ethene ethylene C H4 Each carbon in ethene has 3 regions gray pieces sp2 this molecule is trigonal planar the 3D structure is done with solid lines all in the same plane b Ethyne acethylene C H There is only one triple bond gray with regions above and below the internudear axis The piece already represents the two carbons of the triple bond just add the two hydrogens white spheres The piece without H represents 4 carbons The angles around each carbon are 180
Organic Chemistry
Chemistry in Daily LifeWhich of the following subshells are found in the second principle energy level n 2 S
Organic Chemistry
Chemistry in Daily LifeFor each of the funding as for svampes Shown 0 H eg E ON i 11 U groups 4 3 400 cm Ho indicate complete V 3 00 1720
Organic Chemistry
Chemistry in Daily LifeTo calculate the freezing point of an ideal dilute solution of a single nondissociating solute of a solvent the minimum information one must know is the molality of the solute the molality of the solute and the freezing point depression constant of the solvent the same quantities as in B plus the freezing point of the pure solvent all of the quantities in C plus the molecular weight of the solute all of the quantities in C plus the weight of the solvent
Organic Chemistry
Chemistry in Daily LifeWhich of the following statements is FALSE All voltaic galvanic cells involve the use of electricity to initiate non spontaneous chemical reactions Reduction occurs at the cathode All electrochemical reactions involve the transfer of electrons Oxidation and reduction half reactions occur at electrodes in electrochemical cells
Organic Chemistry
Chemistry in Daily Life1 Draw the structures for each of the alcohols and USE ARIO to rank them in order of these relative acidities Explain how you used ARIO 2 What base can you use to deprotonate each of the alcohols 3 Show how you can use isopropyl alcohol to make a specific ether using the Williamson Ether Synthesis 4 Show how you can use isopropyl alcohol to add to an alkene to make an ether using Mercury Acetate addition reaction
Organic Chemistry
Chemistry in Daily LifeThe equilibrium constant for the generic reaction A g 2B g 2C g is Kc 1 2x102 at 400k Calculate the value of Kp O 1 2x102 O 0 35 O 3 7x104
Organic Chemistry
Chemistry in Daily LifeWhich of the following are homogeneous mixtures Tomato sauce with meatballs A saline solution The air in this room HCI aq
Organic Chemistry
Chemistry in Daily LifeWhich of the following elements are transition metals N F Ca Sn
Organic Chemistry
Chemistry in Daily LifeHow many electrons can the n 3 energy level contain Question 54
Organic Chemistry
Chemistry in Daily LifeWhen a nonvolatile solute is added to a volatile solvent the solution vapor pressure the boiling point and the osmotic pressure across a semipermeable membrane 117 the freezing point decreases increases decreases decreases increases increases decreases increases increases decreases increases decreases decreases decreases increases decreases decreases increases decreases increases
Organic Chemistry
Chemistry in Daily LifeWhich solution should have the highest vapor pressure O 0 10 M sucrose C12H22011 0 25 M sucrose C12H22011 0 50 M Sucrose CroHooQul
Organic Chemistry
Chemistry in Daily LifePolyethylene is a synthetic polymer or plastic with many uses 1 35 g of a polyethylene sample was dissolved in enough benzene to make 100 mL of solution and the osmotic pressure was found to be 1 86 torr at 25 C What is the approximate molar mass of the polyethylene 177 g mol O1 13 x 104 g mol 7 40 10 g mol 1 24 x 105 g mol 1 35 x 105 g mol
Organic Chemistry
Chemistry in Daily LifeCO2 g 393 5 kJ mol H O 1 285 8 kJ mol AH kJ mol An error has been detected in your answer Check for typos miscalculations etc before submitting your answer Submit Answer Review Topics The standard enthalpy of combustion of ethene gas C H g is 1411 1 kJ mol at 298 K Given the following enthalpies of formation calculate AH for C H4 9 Retry Entire Groun 9 more group attem Slee iclas Blackboard T References 2
Organic Chemistry
Chemistry in Daily LifeQuestion 75 How many valence electrons does Arsenic have Question 76
Organic Chemistry
Chemistry in Daily LifeWhat is the abbreviated noble gas configuration for Caesium O Xe 5d1 O Xe 5d10 651 O Xe 651 O kr 6s
Organic Chemistry
Chemistry in Daily LifeWhat is the boiling point change for a solution containing 0 831 moles of naphthalene a nonvolatile nonionizing compound in 250 g of liquid benzene Kb 2 53 C m for benzene 8 41 C 0 761 C 3 04 C 2 10 C 0 526 C
Organic Chemistry
Chemistry in Daily Lifecalcium hydroxide OA 2 2 1 1 OB 1 5 3 2 O C 1 6 3 2 O D 2 1 6 2 QUESTION 5 ammonia OB Calcium chloride calcium nitride Which of the following compounds is insoluble in water OA Sodium chloride water
Organic Chemistry
Chemistry in Daily LifeDraw the line structure for 4 methyl hex 2 yne Explain the steps you ve taken to draw the structure 4 marks
Organic Chemistry
Chemistry in Daily LifeWhich of the following statements is TRUE The absorption and emission of light occurs in fixed discrete quantities of energy known as photons Light and matter can t interact because matter does not have a natural frequency The double slit experiment for electrons proved that electrons are particles Absorption is when energy is released from matter in the form of light particles
Organic Chemistry
Chemistry in Daily LifeClassify the following as a Sugar dissolving in hot tea physical physical or chemical change
Organic Chemistry
Chemistry in Daily LifePredict Will a solution form if potassium nitrate is mixed with NH3 O yes O no
Organic Chemistry
Chemistry in Daily LifeWhat is the full electron configuration for calcium O1s 2s22p 3s23p64s O1s 2s 2p 3s 3p6 1s22s22p 3s23p 4p 1s22s22p 3s23p64s
Organic Chemistry
Chemistry in Daily LifeWhat is the starting material for the reaction below Oll 4 11 NaOH III OH IV
Organic Chemistry
Chemistry in Daily LifeThe half life of a radioisotope is 2 04 x 103 yr How many years will it take for a 289 g sample to decay until 103 g of the isotope remains Enter your answer as an integer
Organic Chemistry
Chemistry in Daily LifeWhich of the following elements would have similar physical and chemical properties AI Co Be B
Organic Chemistry
Chemistry in Daily LifeIs the mass of 129 531 identical to the atomic mass of iodine O no O No answer text provided yes
Organic Chemistry
Chemistry in Daily LifeWhat pressure in atm will a sample of O2 gas occupy at 100 0 mL if O has a volume of 25 00 mL at 2 0 atm A 4 0 atm OB 2 0 atm OC 0 50 atm OD 125 atm