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How to make a chemical reaction greener in a reaction process?
发布时间:
2024-04-18 20:20:21
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1.
For a chemical reaction, what will change as the reaction proceeds ( ) 选项: A、The reaction rate decreases B、The rate constant becomes small C、The equilibrium constant becomes small D、The activation energy decreases
2.
The solid-phase process in which two components are fixed is generated from the solid phase of a certain component at a certain temperature is ( ).选项: A:Eutectoid reaction; B:Peritectic reaction; C:Eutectic reaction; D:Homogenization reaction
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What is the substrate specificity of enzymes: 选项: A:an enzyme can catalyze a chemical reaction with only a particular substrate B:the enzyme can catalyze, reaction with glucose as a substrate, but not with glycerol
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Solid particles formed as a product of a chemical reaction which can be separated from the reaction medium by gravity settling, centrifuging, coagulation and filtration.
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【单选题】Monosaccharides, such as D-glucose, have hydroxyl groups that participate in the reaction. Which of the following chemical reactions is not caused by this group? 选项:A、Uronic acid reaction B、esterification reactionC、etherification reactionD、reduction reaction
6.
A chemical reaction is defined as spontaneous if there is a net loss of free energy during the reaction process. However, spontaneous reactions do not always occur rapidly. Favorable biological reactions require ______________ to selectively speed up reactions and meet the demands of the cell. 选项: A、heat B、ATP C、ions D、enzymes
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For a reaction, if it releases 398 kJ/mol of heat in the forward process, how much is the heat of its reverse process?选项: A:398 kJ/mol; B:-398 kJ/mol; C: 0 kJ/mol; D:unknown
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More than two substances are _____ in this chemical reaction. 选项: A、happened B、participated C、involved D、included
9.
In chemical reaction,2CO (g) + O2(g)→ 2CO2(g), productis ?
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reaction 选项: A:反应,回应 B:reaction C:reaction D:reaction
11.
The solid-phase process in which two components are fixed is generated from the solid phase of a certain component at a certain temperature is ( ). 选项:Eutectic reactionB、Peritectic reaction Homogenization reactionEutectoid reaction
12.
( ) is the wearing away of metals due to a chemical reaction, commonly known as rusting. 选项:A、Fatigue B、Fracture C、Impact D、Corrosion
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( ) is the wearing away of metals due to a chemical reaction, commonly known as rusting. 选项:A、 Fatigue|B、 Fracture|C、 Impact|D、 Corrosion
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What are substances or compounds that are added to a systems in order to bring a chemical reaction? 选项: A: dyes B: solvents C:reagents D: catalysts E: solutes
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( ) is the wearing away of metals due to a chemical reaction, commonly known as rusting. 选项: A、 Fatigue B、 Fracture C、 Impact D、 Corrosion
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The process of phosphorylation of enzymes is reversible, because the reaction catalyzed by protein kinases in cells is reversible选项: A:正确; B:错误
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What is the reaction commonly used to protect aldehyde groups in organic synthesis() 选项: A、Aldol reaction B、Iodoform reaction C、Acetal formation reaction D、Cannizzaro reaction
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B vitamin often forms part of an enzyme’s active site, where a chemical reaction takes place. 选项: A:正确; B:错误
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Portland cement is termed a hydraulic cement because its hardness develops by chemical reaction with .选项: A:Clay; B:Lime; C:Gypsum; D:Water
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