(2)将H2S和空气的混合气体通入FeCl3、FeCl2、CuCl2的混合溶液中反应回收S,其物质转化如图所示。①在图示的转化中,化合价不变的元素是___。②反应中当有1 mol H2S转化为硫单质时,保持溶液中Fe3+的物质的量不变,需消耗O2的物质的量为___。③在温度一定和不补加溶液的条件下,缓慢通入混合气体,并充分搅拌...
(2)将H2S和空气的混合气体通入FeCl3、FeCl2、CuCl2的混合溶液中反应回收S,其物质转化如图所示。①在图示的转化中,化合价不变的元素是___。②反应中当有1 mol H2S转化为硫单质时,保持溶液中Fe3+的物质的量不变,需消耗O2的物质的量为___。③在温度一定和不补加溶液的条件下,缓慢通入混合气体,并充分搅拌...
Explain whether or not a reaction will occur: {eq}Ni^{2+}(aq) + Ag(s) \to {/eq} Electrochemical Series: The spontaneity of an electrochemical (redox) reaction at a certain set of conditions, is determined from the sign of its cell potential value. This cell potenti...
【题目】金属氢氧化物在酸中溶解度不同,因此可以利用这一性质,控制溶液pH,达到分离金属离子的目的。难溶金属的氢氧化物在不同pH下的溶解度(S/mol·L-1)如图所示。 (1)pH=3时溶液中铜元素的主要存在形式是___。 (2)若要除去CuCl2溶液中的少量Fe3+,应该控制溶液范围在pH() A.<1B.4左右C.>6...
Ni(NO3)2(aq)→ Ni2+(aq)+2NO3-(aq) Cu2+(aq)+2NO3-(aq)+ Ni(s)= Ni2+(aq)+2NO3-(aq)+ Cu(s) Spectator Ions Spectator ions are ions that do not take part in the reaction. They are removed from the complete ionic equation to get the net ionic equation. ...
CUCl2 + NH3 = (CU(NH3)4)Cl2 Na2CrO4 + NaOH = NaOH + Na2CrO4 NaCe + AgNO3 = NaNO3 + AgCe Recently Balanced EquationsBalance Using the Algebraic Method Step 1: Label Each Compound With a Variable Label each compound (reactant or product) in the equation with a variable to represent the ...
镍氢电池具有比能量值高.耐过充.过放能力强.循环寿命长.无毒及不使用贵金属等优点.是一种绿色环保型电池.电池使用氢氧化镍为正极活性物质.贮氢合金作负极活性物质.镍氢电池的总反应式为: H2+2NiO电池放电时.其负极反应为 .溶液中OH-向 移动,电池充电时.阳极上的电极反
(1)Ⅰ.CuCl2( s)= CuCl( s)+ Cl2( g) ΔH1=+83kJ·mol1、,△S>0,则要△ G=△H- T△S< 结果一 题目 (11分)近年来,随着锂离子电池的广泛应用,废锂离子电池的回收处理至关重要。下面是利用废锂离子电池正极材料(有Al、LiCoO2、Ni、Mn、Fe等)回收钴、镍、锂的流程图。已知:P204[二(2−乙基...
Zn(s) + Pb^(2+) \to Zn^(2+) + Pb(s) Find the type of reaction. Cl_2(g) + 2Fa(aq) to 2Cl (aq) + F_2 (g) Use the activity series to predict whether or not the following reaction will occur. Zn(s) + 2H^(+) \to Zn^(2+) + H_2(g) Explain ...
The molalities b of {b1RbCl + b2 (CoCl2 or NiCl2 or CuCl2)}(aq), have been investigated in saturated solutions at the temperature T = 298.15 K by the physicochemical-analysis method. The thermodynamic functions needed for theoretical plotting of the solubility isotherms are calculated using ...