Chemistry Highschool XI

 1. The presence of a carbon compound in a substance can be identified by the presence of an acetic acid. If the substance contains a carbon compound, complete combustion will produce... oxygen gas carbon dioxide gas D. lime gas E. lime gas C. carbon monoxide gas 

2. Inorganic carbon compounds generally have zero properties. A, can only be synthesized by living things. The molecule has a chain of carbon atoms. It is easily destroyed by heating at high temperatures. It has relatively low boiling and melting points. It is easily soluble in polar solvents. 3. The uniqueness of the carbon atom that causes it to have a wide variety of compounds is... A, has 4 valence electrons that can be used for covalent bonds. It can form carbon chains in various shapes. It has an unstable electron configuration like a noble gas. The shape of the bonding space in a carbon atom is a cetrahedron. It is a very stable solid at room temperature. 4. The simplest hydrocarbon compound consisting of only one carbon atom is... .• A. methane D. carbon monoxide B. methene E. acetylene C. methyne 5. The molecular formula representing a saturated hydrocarbon is... A. CHA D. CH, B. CH, E. C HIp C. CH6 6. In the compound 2,3-dimethylpentane, there are prime, secondary, and tertiary carbon atoms, each of which is... A. 1, 2, and 4 D. 4, 1, and 2 B. 2, 1, and 4 E. 4, 2, and 1 C. 2, 4, and 1 7. The following is not a property of a homologous series. .- A. can be expressed by a general formula its boiling point increases with chain length; its members have similar chemical properties have the same empirical formula ~ L. differs from one member to the next; CH, 3. CaF, is 8 × 10% 3.2 × 10-11 1.6 × 10-11 Value of a saturated solution of dr /٤٠٠٠-٠٢ * 04x0 2 = 2 x 10* mol/L, solubility product D. 2 x 10-12 C E. 4 x 10-12 ksp: 3.2x10-

6. Among the following compounds, the one with the lowest solubility in water (expressed in mol/L) is... AgCl (Ksp = 1.56 x 10-10) AgBr (Ksp = 7.7 x 10-13) D. AgCO (Ksp = 2.4 x 10-12) E. AD,RO, (Ksp = 1.8 x 10%) C. AgSCN (Ksp = 1.2 x 10-12) 7. Given that the Rsp of Ag,CrO4 = 1 x 10-12 • If the concentration of chromate ions in a solution is 1 x 10* mol/L, the number of Ag* ions that can dissolve in it is... A. 0.5 x 10-8 D. 0.5 x 10-4 B. 1 x 10-8 E. 1 x 10-4 Ag, CrOy ZAgren + Croyce C. 1 x 10-6 S 10 - 5 10 (S)=1x10-4) -CH 8. A saturated Mg(OH)2 solution has a pH of 9. K , Mg(OH), at that temperature is . . . PO#=5210 A. 5 x 10-10 D. 5 x 10-16 3 12/01 B. 5 x 10-15 E. 1 x 10-16 Mo.) S) C. 1 x 10-15 ksp = 5x10-16 (5x106) (10"5)= 9. If the solubility of the salt Ba,(PO„)2 = x mol/L, the K value, Ba, (PO )2 is ...• A. 4x Bs (P04)2 = 3B2+2804 E. 135x 9x 27x3 ksp = (3x) * (74 27x" x 4X 106x3 10. AgCl solution has the smallest solubility when dissolved in aqueous solution. D. BaCl, 0.2 M A. NaCl 0.1 M E AgNO, 0.3 M AgNO, 0.1 M CaCl, 0.1 M 12. Name the following irreparable hydrocarbon: A. 2-merylbutane B. 1,2-dimerylbutane D. 2,2,3-trimethylbutane C. 3-erylpentane E. 3-methyl-1-butene 13. Among the following compounds, the one that is not an isomer of C,t, is: A. 2-meryl-1-butene D. 3-meryl-1-butene B. 2-meryl-2-butene E. 2-pentene C. 2,2-dimethylpropane 14. The following compound is not a member of the alkene homologous series: A. CH,CH, CH D. CH,CHCHCH B. CH,C(CH,)CH E. CH,C(CH,)CH,CH C. CH,CHCH 15. If the compound: CH,-CH-CH-CH is reacted with hydrogen gas in the presence of a catalyst until it no longer reacts, the product will be: A. ethane and methane D. butyne B. propene and methane E. butane C. butene 16. The following hydrocarbon is not an isomer of hexane: A. 2,3-dimethylbutane D. 2-methylpentane B. 2,2-dimethylpropane V E. 3-methylpentane C. 2,2-dimethylbutane 17. Among the compounds below, the one with the highest boiling point is CH,CH(CH,)CH, CH,CH,CH,CH, CH,(CH,)3 CH3 (CH,),CHC(CH.)3 C. CH,CH,CH(CH,)CH,

17. Among the compounds below, the one with the highest boiling point is CH,CH(CH,)CH, CH,CH,CH,CH, CH,(CH,)3 CH3 (CH,),CHC(CH.)3 C. CH,CH,CH(CH,)CH, 18. The general formula for a homologous series of alkenes is... A. C„H2n-2 D. C,H,V B. C,H2n-1 E. CH2n+2 C. CH2ml

87. Among the following compounds, the one with geometric isomerism (cis-trans) is... 1,2-dichloroethene 1-butene 2-butene 2-propene 88. Among the compounds below, the one with an isomer of pentane is... 2,2-dimethylpropane 2,3-dimerylbutane 2-methylbutane 2-methylpropane Computer Test 1. Choose the best answer. 1. The correct statement about an endothermic reaction is... The initial enthalpy is greater than the final enthalpy and AH > 0. The initial enthalpy is less than the final enthalpy and AH > 0. The initial enthalpy is greater than the final enthalpy and AH < 0. The initial enthalpy is equal to the final enthalpy and AH - 0. 2. The enthalpy change of formation (AH) of Na,SO, crystals is shown by the reaction: 4. 2NaOH (aq) + H,SO, (aq) → Na,SO, (aq) + 2H,O(/) B. 2NaOH() + H,SO, (aq) → Na,SO, (crystal) + 2H,O()) Na,O(6) + SO,(g) → Na,SO, (crystal) D. 2Na(s) + JS,(6) + 20,(g) → Na,SO, (crystals) 16Na(s) + 5,(s) + 160,(g) → 8Na,SO, (crystal) If known: N,(g) + 3H,(g) → 2NH,(g) AH = -92 kJ, the enthalpy change in the breakdown of 1 md of NH gas into its elements is ... . -92 kJ D. +92 kJ) B. 46 kJ E. +184 kJ +46 kJ 4. When 2.24 liters of C,H gas (measured at standard conditions) are burned, the heat produced is 129.9 kJ. Therefore, the AH°C,H is .... A. -2,598 kJ/mol D. -129.9 kJ/mol -1,299 kJ/mol E. +1,299 kJ/mol -259.8 kJ/mol → 5096m When 50 mL of HCl solution containing 0.05 mol of HCl is reacted with 50 mL of NaOH solution containing 0.05 mol of NaOH in a calorimeter: there will be a temperature increase of 6.5°C. If the specific heat of the solution is considered to be 4.18 J/g K, the reaction AH: or) HC|(ag) + NaOH(aq) → NaCl(aq) + H,O(1) is .... LH S-D -27 kJ/mol C -54 k]/mol D. +54 kJ/mol 2421. = M-C +27 kJ/mol E. -1,086.8 kJ/mol Known: H,(8) + 0,(g) → H,0,(l) H,0,(l) → H,0(L) +20,(8) ДН = -187.43 kJ ДН = -98.15 kJ SALONA =-2.2

Chemistry of SMA/MA ulide 2 01 Mo -5434k 12070240 NO(g +30,(0 → NO.(2) AH = b kJ Hesamy: AH for the reaction: A. 2NO.(g → N ,(e) is …. B. (a + 26) kj D (a - 2h) kJ IN. (2a + b) k) Cr (-a + 26) kJ 12. Endorsed AH* H,0(g - -242 kJ/mol 01 = AH: CO,(e) -394 kJ/mol AH; C,H.(ø) = +52 kJ/mol Ita 32 it C,H, ditokar ecam owner cetai den Nporama Reduti 2C,H,(g) + 50,(g) → 4CO,(g) + 2H,0(g) will produce a heat of .... (4, C = 12, H = 1) = 391.2 kJ 4L-384) +24 B. 432 kJ 6years D. 2.164 kJ 20,10 C. 1.082 kJ E. 4.328 kJ 1956. 13. H,O() → H,(g) + 40,(g) AH = +68.3 kcal H,(g) + 30,(6) →H,0(g) AH = −57.8 kcal H,O(l) → H,O() AH = ~1.4 kcal A. The enthalpy change from ice to water vapor is -11.9 kcal *.. +9.1 kcal D. +124.7 kcal C. -9.1 kcal E. +11.9 kcal 14. Among the following reactions, the reaction for which the change in enthalpy is equal to the energy of ikam H-I is …. ZHI(g) → H,(g) + I,(g) HI(g) → }H,() + 44(8) HI(g) → H(g) + l(g) HI(aq) → H°(aq) + G (aq) HI(g) → H*(g) + G(g) 15. Bond dissociation energyj Sy = × kJ/mol, the amount of energy used, to give birth A. B. one mole of solid sulfur molecules into gaseous sulfur atoms one mole of gaseous sulfur molecules into gaseous sulfur atoms one mole of solid sulfur molecules into gaseous sulfur molecules one mole of solid sulfur molecules into atoms of solid sulfur one mole of gaseous sulfur molecule becomes gaseous sulfur ions

15. The bond dissociation energy of S = × kJ/mol. This amount of energy is used to convert... A. B. One mole of solid sulfur molecules into gaseous sulfur atoms One mole of gaseous sulfur molecules into gaseous sulfur atoms One mole of solid sulfur molecules into gaseous sulfur molecules One mole of solid sulfur molecules into solid sulfur atoms One mole of gaseous sulfur molecules into gaseous sulfur ions 16. Given: AH° CH,(g) = -74.8 kJ/mol AH, H,O(g) = -241.8 kJ/mol AH, CO,(g) = -393.5 kJ/mol Specific heat of water = 4.2 J/g K High School Chemistry/MA NO2 Compression Test a-m = 3m 1)0 2 1. Complete the following The most appropriate answer. 1. A mole of gas A and b moles of gas B are reacted into a 2-liter chamber with a pressure of 0.5°C. Reaction: t. 1os. V=2ic. 2A(g) + 3B(g) → C(g) v After the reaction has lasted for 10 seconds, m moles of C gas are formed. The average reaction rate in those 10 seconds is .... mol L-' sec' A. ml20 b-3m D. (a - 2m) B. 6/20 E. (b - 3m) -Lm b-30) C. al20 2. In the reaction: CaCO(s) + 2HCI(g) → CaCl(g) + H2O(l) + CO(g) Sporeduction [HCI] M Graph shows the relationship between HCl concentration and time is .... Line 1 Line 2 Line 3 Line 4 Line 5 Time 3. The reaction rate: 2A + 2B → 3C + D can be expressed as the rate of increase in concentration A per unit time B per unit time C per unit time A and B per unit time B and C per unit time 4. If the reaction: N(g) + 3H(g) → 2NH(g) has a rate of formation of NH gas, of r mol/L. Then ...., A, is a first-order reaction with respect to gas nitrogen The amount of H2 that reacts per second is 3r mol/L. - N2 gas decreases by 2r mol every second. The amount of NH2 formed is not affected by the initial H2 concentration. In the first second, r mol of NH2 are produced.

5. A piece of zinc metal reacts with hydrochloric acid according to the following equation: Zn(s) + 2HCl(ag) - → ZnCl(ag) + H2(g) If the hydrogen gas produced is collected, the curve showing the change in volume of hydrogen gas over time is... • High School Chemistry/Vocational School fld mor action [Fe"") (M) No. 1S-1 (M) Rate (M/dct) 0.1 0.1 1. 0.2 0.1 2 2. 8 0.2 3. 0.2 16 0.2 4. 0.3 54 The reaction has a rate constant of D. B 2.0 100 E. 20 200 14. From the reaction: 2Fe*(aq) + 3S-(aq) → S(s) + 2FeS(s), the experimental data obtained at a constant temperature are: (½) 9" L0 From these data, the overall reaction order is A. B. 3 D. 6 E. 7 9 = 3 Order = 2+3- 5 15. A third-order reaction has a rate constant of: A. sec-! D. mol dm " sec-1 B. mol dm 3 sec-1 E. mol 3 dm sec-1 C. mol2 dm° sec-1 16. An increase in temperature will accelerate the reaction rate because... An increase in temperature will result in a decrease in activation energy. The kinetic energy of the reacting particles increases. In chemical reactions, temperature acts like a catalyst. An increase in temperature increases the concentration of the reactants. This increases the frequency of collisions between particles. 17. At 30°C, 0.1 mol of A and 0.1 mol of B will react in 10 minutes to form 0.1 mol of C. If the reaction If the reaction takes place at 100°C, then... The amount of C produced in the first 10 minutes is less. The amount of substance A present after the first 10 minutes decreases by 0.1 mol. The amount of A and B that decreases each minute will decrease. The number of moles of C formed is ultimately the same as at 30°C. The reaction order is greater than that at 30°C. 18. In an experiment to investigate the reaction rate: x + Y → Z - g 198 The experimental data obtained are: 9 = 2 The graph depicting the reaction order with respect to X is... -0 dide = 2 order = 0 Chapter 3 Reaction Rate No. (X)„wal (M) initial (M)) Speed ​​(M/s) 1. 0.10 0.10 2.2 x 10 2. 0.10 0.30 19.8 x 10-4 0.20 0.30 19.8 x 104

At the applied temperature, the reaction is at equilibrium. ACO,() = CaO6 + CO,(g) The volume of the chamber is increased, so . ..• D. CaCO and CO decrease CaO and CO decrease CaO increases CaCO increases CaO and CO increase 7. In order for the equilibrium reaction: N (g) + O (g) = 2NO(g) AH = +180 kJ the amount of NO produced is maximized, the necessary action is: D. increase temperature A. increase pressure* increase volume decrease pressure decrease volume 8. At a certain temperature in a closed chamber with a pressure of 10 atm, there are in equilibrium: 0.3 mol of SO gas; 0.1 mol of SO gas; and 0.1 mol of O2 gas, with the reaction: 250, (g) = 250, (8) + 0, (g) The value of K p at this temperature is .. 36 atm 18 atm 4.5 atm 0.05 atm C. 9 atm 9. At T°C, 0.6 mol of SO2 gas is heated in a 10-liter chamber until 50% dissociates according to the reaction equation: 250, (g) = 250, (g) + 0, (g) The equilibrium constant (K) for this reaction is... ? A. 0.010 0.015 kC = 10.083/0-005] D. 0.025 C 0.020 E. 0.030 10. In a 1-liter container, there is 1 mole of HI gas that decomposes according to the reaction: 2HI (g) = H(g) + I(g) A. 0.8 mol The K value at that time is 4. The amount of H gas present at equilibrium is 0.6 mol 0.5 mol 0.4 mol 0.2 mol

11. At a certain temperature, in a 1-liter container, the equilibrium is: 250 (g) = 250 (g) + 0 (g) Initially, there were 0.5 moles of SO2 gas, and after equilibrium was reached, the ratio of moles of SO2 to 0 was 4:3. The equilibrium constant is... B. 0.23 C. 0.38 D. 0.60 3 E. 6.00 C/S M misai 4 150° 20/5 IM bes High School Chemistry Volume 2