Which of the following reactions is a decomposition reaction? A. 2H₂ + O₂ = 2H₂O B. C
Which of the following reactions is a redox reaction? (a) K2CrO4 + BaCl2 → BaCrO4 + 2KCl (b) Pb22+ + 2Br- → PbBr (c) Cu + S → CuS A (a) only B (b) only C (c) only D (a) and (c) E (b) and (c) 相关知识点: ...
刷刷题APP(shuashuati.com)是专业的大学生刷题搜题拍题答疑工具,刷刷题提供Which one of the following reactions is a redox reaction?A.NaOH + HCl → NaCl + H 2 OB.Pb 2+ + 2Cl - → PbCl 2C.AgNO 3 + HCl → HNO 3 + AgClD.H 2 O + NaCl → NaOH + HClE.None of the a
Which of the following is a chemical reaction? A. Melting ice B. Breaking a glass C. Rusting of iron D. Folding a paper 相关知识点: 试题来源: 解析 C。本题考查化学反应的定义。A 选项冰融化是物理变化,物质的状态发生改变但没有新物质生成。B 选项打破玻璃也是物理变化,只是物质的形状发生改变...
Which of the following is a chemical reaction? A. Melting ice B. Breaking a glass C. Rusting of iron D. Folding a piece of paper 相关知识点: 试题来源: 解析 C。本题主要考查化学变化的定义。A 选项冰融化是物理变化,物质的状态改变但没有新物质生成。B 选项打破玻璃也是物理变化,只是物质的...
A. Sodium carbonate + hydrochloric acid B. Magnesium sulfate + sodium hydroxide C. Hydrogen peroxide decomposition D. Iron + copper sulfate 相关知识点: 试题来源: 解析 B。选项 A 碳酸钠(Sodium carbonate)和盐酸(hydrochloric acid)反应生成二氧化碳、水和氯化钠,无沉淀生成。选项 B 硫酸镁(Magnesium sul...
Is it possible to do the following reaction in a single transformation using a metal hydride reagent? If so,add the necessary reagents to the reaction arrow. If not, check the box under the drawing area. Add ren conditions There are 2 steps...
13 The following equation represents a reaction.Persamaan berikut mewakili satu tindak balas.Cu(OH)2 + 2HNO33 Cu(NO_3)_2+2H_2O https://cikguadura.wordpress.com/What are the reactants in this equations?Nyatkan bahan tindak balas dalam persamaan ini? C A Copper(II) nitrate and water Ku...
1.4 The following reaction reaches equilibrium in a closed container:2A2X (aq) + BA2(g)=3A2 (aq) + BX2 (s):△H 0The pressure in the container is then decreased.What effect does this have on the rate of the reverse reaction and the concentration of A2?C Rate of reverse reaction Co...
A. 1.5-2 cm2 B. 4-5 cm2 C. 6-8 cm2 D. 1-1.5 cm2 查看完整题目与答案 【单选题】Given that ∆rHmӨ for the reaction of 3O2 (g) = 2O3 (g) is 288.7 kJ·mol-1, which of the following steps is required to move the reaction to the right? ( ) A. High ...