元素推断中常用的10个反应: (1)NH3+HNO3=== (2)SiO2+4HF=== (3)Na2SiO3+2HCl=== (4)Cl2+H2S=== (5)Al2O3+2NaOH=== (6)Al(OH)3+NaOH=== (7)2Al(OH)3+3H2SO4=== (8)Al(OH)3+3HClO4=== (9)Na2S2O3+2HCl=== (10)CaC2+2H2O===相关知识点: ...
-|||-0+1-1+2-2-|||-+2-1+5-2-|||-【答案】H2 HF MgO-|||-Zn Cl P2O5-|||-+3-2+2-2-|||-+1+5-2-|||-+1+5-2-|||-Fe203-|||-FeO-|||-H3 PO4-|||-HNO3-|||-+1-2-|||-+3-2-|||-Ag2O-|||-Al2O3【基本概念】1.应用化合价可以推求实际存在的化合物的化学式...
The chemical etching of definite surface areas of the samples, which are either normal or parallel to the tenfold axes, using a solution with HF–HNO3–H2O (1 : 5 : 4 in volume ratio; 0°C; 5–10 min), produces a large number of microfacet pits of decagonal prismatic ...
The balanced equation will be calculated along with the solubility states, complete ionic equation, net ionic equation, spectator ions and precipitates. 元素中的第一个字符使用大写字母,第二个字符使用小写字母。例子:Fe, Au, Co, Br, C, O, N, F。 替换不可改变的组以避免歧义。例如,C6H5C2H5 +...
Al2S3 + 30HNO3 = 3H2SO4 + 2Al(NO3)3 + 24NO2 + 12H2O. Enter the amount of any of the substances to determine the ideal amounts to maximize the theoretical yield of the reaction. To find the limiting and excess reagents when a non-ideal amount of each sub...
下列各组物质中,不满足组内任意两种物质在一定条件下均能发生反应的是()物质甲乙丙组别A Al HCI NaOH BNH3O2HNO3C SiO2NaOH HF
SiO NaOHHF B. NaOH(NH4)2SO3 H2SO C. A1Cl3 NH3·H2OCO2 D. C02 Ca(OH Na2 CO3(aq) 3下列各组物质中,不满足组内任意两种物质在一定条件下均能发生反应的是 A. A B. B C. C D. D 4下列各组物质中,不满足组内任意两种物质在一定条件下均能发生反应的是物质组别甲乙丙A Al HCI NaOH ...
a) HF b) HI c) H3PO4 d) H2CO3 e) HClO2 What are the products from the complete neutralization of carbonic acid with aqueous potassium hydroxide? Select one: A. KHCO_3(aq) and H_2O(l) B. K_2CO_3(aq) and H_2O(l) C. KC_2H_3O_2(aq) and H_2O(l) D. KHCO_4(aq...
19种混合标准溶液-铍钠镁铝钾钙钒铬锰铁镍铜锌砷硒银镉钡铅BE,NA,MG,AL,K,CA,V,CR,MN,FE,NI,CU,ZN,AS,SE,AG,CD,BA,PB/介质:HNO3+HF化学性质 安全信息 19种混合标准溶液-铍钠镁铝钾钙钒铬锰铁镍铜锌砷硒银镉钡铅BE,NA,MG,AL,K,CA,V,CR,MN,FE,NI,CU,ZN,AS,SE,AG,CD,BA,PB/介质:HNO3...
Balance AlF3 + H2O = HF + Al2O3 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 unknown coefficients. aAlF3+bH2O =cHF +dAl2O3...