Balance NaAlH4 + HCl = NaCl + AlCl3 + H2 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. a NaAlH4 + b HCl = c NaCl + d AlCl3 + f H...
(3) NaAl(OH)₂CO₃ + 4HCl = NaCl + AlCl₃ + CO₂↑ + 3H₂O Ⅱ.(1) 石灰石 石英 (2) 原电池 锌块 (3) 复合材料 **Ⅰ部分分析** 1. (1) 题目中未明确问题,但“a”可能是填空题的占位符,需根据原题补充。 2. (2) 油脂水解生成高级脂肪酸和甘油;抗坏血酸(维生素C)含...
(aq)]=0.3mol1mol/L=0.3L=300mL,故答案为:0.1mol;300mL;(4)若V1=60mL,说明盐酸有剩余,剩余盐酸的物质的量=1mol/L×0.06L=0.06mol,则和金属反应的盐酸的物质的量=3mol/L×0.1L-0.06mol=0.24mol,设镁的物质的量是x,铝的物质的量是y,则:x+y=0.12x+3y=0.24,解得:x=0.06y=0.04,所以镁的物质...
A.Al(OH)3(s)+NaOH(aq)?NaAl(OH)4(aq);△H<0 B.CH3CH2OH(l)+3O2(g)→2CO2(g)+3H2O(l);△H<0 C.CO2(g)+C(g)?2CO(g);△H>0 D.H2(g)+Cl2(g)?2HCl(g);△H<0 查看答案和解析>> 在理论上不能用于设计原电池的化学反应是( ) ...
2NaCl(s) + H2SO4(aq) arrow 2HCl(g) + Na2SO4(s) You are given 2.00 moles of H2SO4 and 150 grams of NaCl. a. Which reactant when completely used up will produce the least amount of HCI product Given the following chem...
aAlCl3+bNaOH +cH2O =dNa(Al(OH)4) +fHCl Step 2: Create a System of Equations Create an equation for each element (Al, Cl, Na, O, H) where each term represents the number of atoms of the element in each reactant or product. ...
d = 1 (NH4F) Step 4: Substitute Coefficients and Verify Result Count the number of atoms of each element on each side of the equation and verify that all elements and electrons (if there are charges/ions) are balanced. NH4Cl + HF = HCl + NH4F ...
Simplify the result to get the lowest, whole integer values. a = 3 (NaCl) b = 1 (K2Cr2O7) c = 14 (HCl) d = 3 (NaCl3) f = 2 (CrCl3) g = 2 (KCl) h = 7 (H2O) Step 4: Substitute Coefficients and Verify Result Count the number of atoms of ...
For example, C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced, but XC2H5 + O2 = XOH + CO2 + H2O will. Compound states [like (s) (aq) or (g)] are not required. You can use parenthesis () or brackets []. How To Balance Equations Balan...
a = 1 (C3H3) b = 1 (HCl) c = 1 (C3H3) d = 1 (HCl) Step 4: Substitute Coefficients and Verify Result Count the number of atoms of each element on each side of the equation and verify that all elements and electrons (if there are charges/ions) are balanced. ...