Quiz literacy papers
1 Chemistry creates a better life. In the following production activities, the corresponding chemical principles are not applied ( ).
2 Let na be the value of Avogadro's constant, and the following statement is false ( ).
a Under standard conditions, 30The number of atoms contained in 8 g of Ccl4 is Na
B 100 g of 46% ethanol solution contains the number of H—O bonds for Na
C 1 mol Na2O2 fully reacts with a sufficient amount of CO2, and the number of electrons transferred is Na
D N(H2SO3) N(HSO3-) 1 mol NaHSO3 solution, the number of NaHso3 contains more than Na
3 Cuprous hydride (CuH) is a reddish-brown insoluble substance that can be prepared at 40 50 with a CuSO4 solution and "another reactant". CuH can be burned in Cl2 to produce CuCl2 and HCl;CuH reacts with hydrochloric acid to form CuCl insoluble matter and H2. The following inferences are incorrect ( ).
a "Another reactant" is reductive in the reaction.
The chemical equation for the reaction of b Cuh with Cl2 is 2CuH 3Cl2
2cucl2＋2hcl
c When CUH reacts with CL2, CUH acts as a reducing agent.
The ionic equation for the reaction of d Cuh with hydrochloric acid is Cuh H ===Cu H2
4 The following indicates that the correct one is ( ).
5 At room temperature, the following groups of ions can coexist in large quantities in the specified solution ( ).
A In the solution that makes the pH test paper appear blue: Na, Mg2, Clo, HSO3-
b．c(fe3＋)＝0.1 mol·l 1 in solution: K, NH4+, SO42-, SCN
c. kw/c（oh-）＝0.1 mol·l 1 in solution: Na, HCO3, K, NO3
d．0.1 mol·l 1 in NaHCO3 solution: NH4+, NO3-, Na, SO42-
6.The structure of an ionic compound synthesized by Chinese scientists is shown in the figure, which is composed of two cations and two anions, of which there are two 10-electron ions and one 18-electron ion. x, y, z, m are all short-period elements, and none of them are in the same family;X is the element with the smallest radius, Z is the element with the most content in the air, and Y is more electronegativity than Z. The following statement is incorrect ( ).
The boiling point of a compound formed by x and y is higher than that of a compound formed by y congeners and x, mainly because it is easy to form intermolecular hydrogen bonds.
The hybridization mode of z in the anion of the hydrate corresponding to the most ** oxide of b z is sp2 hybridization.
c Element first ionization energy: y
d In this salt, there are chemical bonds such as ionic bonds, polar covalent bonds, non-polar covalent bonds, coordination bonds and hydrogen bonds.
7 The following statement is incorrect ( ).
a The first ionization energy be>b can be explained by the Hunt rule
b The elements of the ground state atom 4s orbital half full are located in group A and group B, respectively.
c The H—N—H bond angle is larger in [Zn(NH3)6]2 compared with NH3.
If the distance between the nucleus of Ca2 and the nearest F in a CaF2 crystal is a cm, the edge length of the unit cell is
A CM8 "The Great Work of Creations - Writing Salty" has the following record: "The tide is shallow and the ground is not pressed. As soon as the tide passes, tomorrow the sky will be fine, and the salt box will be dried in half a day, and the decoction will be swept away. The following statement is correct ( ).
a The substance obtained from "decoction" is commonly known as "caustic soda".
b The "salting" process involves a "distillation" operation.
c "Salting" is done in the laboratory, and evaporation dishes and alcohol lamps are used.
d The redox reaction and metathesis reaction are involved in this documented process.
9 Imatinib mesylate is the drug of choice for chronic myeloid leukemia, and its synthesis route is shown in the figure (minor products omitted). The following statement is incorrect ( ).
a Amide bonds are produced by the occurrence of a substitution reaction.
b. There are coordination bonds in the molecule.
c Organics cannot fade the acidic potassium permanganate solution.
There are two hybridization modes of sp2 and sp3 in the c and n atoms in the d molecule.
10 In order to determine the SO2 content in a certain exhaust gas, a student passed a sample of exhaust gas into 100 ml 0100 mol·l 1 acidic KMno4 solution (assuming that no other gases in the sample participate in the reaction, SO2 can be fully absorbed by the solution), the ion equation of the reaction is 5SO2 2MNO4- 2H2O===5SO42- 2MN2 4H. If the tail gas velocity is a l·s 1, the average time taken by the solution to fade is b s when measured three times in parallel, then the SO2 content (unit: g·l 1) in the tail gas sample is ( ).
11 The correct one in the description of each of the following experimental devices is ( ).
A unit can be used to produce chlorine.
b Device can be used to prepare ethyl acetate.
c device can be used to prove that carbonic acid is more acidic than silicic acid.
d device can be used to compare the strength and weakness of the non-metallic properties of carbon and silicon.
12 The types of substances and the valencies of core elements are two important perspectives for studying the properties of matter. As shown in the figure of the "valence-class two-dimensional diagram" of sulfur and some of its compounds, the following statement is wrong ( ).
A S and O2 cannot produce Y by a one-step reaction during ignition
When B Z is used as an oxidant, it can theoretically be reduced to S element.
The aqueous solution of Cx is placed in air and is easily oxidized.
Of d x, y, and z, only z is an electrolyte.
13 The reaction x===2z goes through two steps: x y;②y→2z。The variation curves of the concentrations c of x, y, and z in the reaction system with time t are shown in the figure. The following statement is incorrect ( ).
a is the curve of c(x) as a function of t.
b t1, c(x) c(y) c(z).
c t2, the consumption rate of y is greater than the generation rate.
d t3, c(z) 2c0 c(y).
14 A certain ammonia borane (NH3·BH3) battery device is shown in the figure (before ammonia borane is added, the liquid mass in the two pole chambers is equal), and the battery reaction is NH3·BH3 3H2O2===NH4BO2 4H2O (the influence of other reactions is not considered). The following statement is incorrect ( ).
a Ammonia boranes are hybridized in different ways for N and B.
b The electrode reaction formula of the positive electrode of the battery is H2O2 2H2E ===2H2O
c Other conditions remain unchanged, adding an appropriate amount of sulfuric acid to the H2O2 solution can increase the current intensity.
d If all the added ammonia borane is discharged, the difference in the liquid quality of the left and right poles in the chamber is 38 g, then the circuit is transferred by 12 mol electrons.
15 The photothermochemical cycle decomposition of CO2 using TiO2 as a catalyst provides a new way to reduce greenhouse gas emissions, and the mechanism of the reaction and the energy changes of each molecule when the chemical bonds are completely broken are shown in the figure. The following statement is incorrect ( ).
a The absorption of energy in the process causes the titanium-oxygen bond to be broken.
b In this reaction, light and heat energy are converted into chemical energy.
c The use of TiO2 as a catalyst can increase the rate of chemical reactions.
The complete decomposition of 2 mol of carbon dioxide into 2 mol of carbon monoxide and 1 mol of oxygen requires 30 kJ of endothermy
16 Magnesium chloride crystals have the following transformation relationship:
The following statement is incorrect ( ).
A solid is soluble in saturated NH4Cl solution.
b Gas can make anhydrous CuSO4 turn blue.
Both solution and solution can react with Cu at room temperature.
d Adding a KI solution to a solid turbid solution can produce a yellow precipitate.
17. Add a certain amount of A and B to a closed container with the same volume, and the reaction occurs: 2A(G) B(G)=2C(G), and the conversion rate of A at different temperatures is measured in the same time, as shown in the following table. The following statement is correct ( ).
a The positive reaction of this reaction is an endothermic reaction.
b At a certain temperature, the density of the gas in the container does not change, indicating that the reaction has reached an equilibrium state.
C200,A conversion rate of 75% when the reaction reaches equilibrium.
d 400, if the equilibrium concentration of b is 025 mol·l 1, then the equilibrium constant of the reaction is k4
18 Tin and its compounds have important uses in production and life. It is known that the melting point of SN is 231;SnCl4 is highly hydrolyzable, with a melting point of 33 and a boiling point of 114. The laboratory wants to use the device shown in the picture to prepare a small amount of SNCL4 (the clamping device is omitted), and the following statement is incorrect ( ).
a Alcohol lamps are lit before the experiment begins, and then alcohol lamps are lit.
b The function of a device is different from that of a device.
c If there is no device, SNl2 will be generated in addition to SNCl4 in the device
d This experiment will cause pollution, sodium hydroxide solution should be added to the device.
19 Elemental sulfur and hydrogen can form a new type of superconducting material at low temperature and high pressure, and its unit cell is shown in the figure. The following statement is incorrect ( ).
a s is located in the p block of the periodic table.
b The chemical formula of this substance is H3S
C s is located in the octahedral void formed by H
d The crystal belongs to molecular crystals.
20 The greater the conductivity of the electrolyte solution, the stronger the conductivity. Use 0100 mol·l1 hydrochloric acid was titrated for 1000 ml at a concentration of 0100 mol·L1 NaOH and dimethylamine [(CH3)2NH] solution. The conductivity of the solution during titration was measured using a sensor and is shown in the figure. The following statement is correct ( ).
A curve represents the curve for titration of the dimethylamine solution.
B point A solution: C(H) C(OH)C[(CH3)2NH·H2O].
Cd point solution: 2C(Na) 3C(Cl).
d At the same temperature, among the solutions at points A, B, C, and D, the maximum degree of ionization of water is point C.