Chemical reactions can be exothermic or endothermic. Which of the following reactions is exothermic? A. Melting ice B. Burning coal C. Evaporating water D. Dissolving salt in water 相关知识点: 试题来源: 解析 B。燃烧煤炭是放热反应。冰融化、水蒸发和盐溶解于水都是吸热反应。本题考查对放热反应...
A solvent is a liquid that is used to dissolve the reactants of a chemical reaction. It serve...
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Thishydrogen also does not produce CO2 on combustion.endothermic and exothermic recins.In the equilibium with exothermic forward reaction, the activation energy of theforward reation is lower han the activation energy of the reverse reaction. Whiethe inroducion of a calalyst will derease the ...
Higher is the charge density, higher will be the lattice energy and reaction will be highly exothermic. Answer and Explanation:1 Al3+ion should have the most exothermic due to the following reason. It has a charge of +3. Its size is small. ...
Exothermic reaction is the reaction in which the energy is released in the form of heat energy where the product form will convert the wall of the vessel hot in which the reaction is carried out.As we all know, the ammonium chloride is one of the inorganic compoun...
Consider the following reaction. 4HCl(g) + O2(g) arrow 2H2O(g) + 2Cl2(g); Delta H = -114 kJ In which direction will the equilibrium shift if the pressure is increased? Consider the following equilibrium: NH3(aq...
- If ΔH is negative (exothermic reaction) and ΔS is positive (increase in disorder), then ΔG will definitely be negative, favoring spontaneity. - If ΔH is positive (endothermic reaction) and ΔS is also positive, spontaneity can still occur at high temperatures where TΔS outweighs Δ...
In the following exothermic reaction, in which direction will the position of the equilibrium be shifted when the temperature is decreased? 2HI(g) gives H2(g) + I2(g) Consider the following reaction at equilibrium. 2NO(g) + Cl2(...
The flux of element A from species j to species k through reaction step i can be calculated5 using the following equation: (1)Aijk=nA,jnA,kriNA,i where nA,j and nA,k are the number of atoms A in species j and k, respectively, and NA,i is the sum of the number of atoms A ...