TABLE OF CONJUGATE ACID-BASE PAIRS Acid Base Ka (25 C)
TABLE OF CONJUGATE ACID-BASE PAIRS Acid Base K a (25 oC) HClO 4 ClO 4 – H 2 SO 4 HSO 4 – HCl Cl– HNO 3 NO 3 – H 3 O + H 2 O H 2 CrO 4 HCrO 4 – 1 8 x 10–1 H 2 C 2 O 4 (oxalic acid) HC 2 O 4 – 5 90 x 10–2 [H
Acid-base accounting - USGS
Acid-Base Accounting: What is it? Acid-Base Accounting (ABA) is the balance between the acid-production and acid-consumption properties of a mine-waste material Minerals in waste material (mostly sulfides; mostly pyrite) react with water and oxygen to produce sulfuric acid This acid is itself detrimental to water quality Acid leaches metals
Conjugate Acid-Base Pairs Ordered by Strength Acids Bases
Conjugate Acid-Base Pairs Ordered by Strength Acids Bases [strong] [weak] HClO 4 ClO 4 – H 2SO 4 HSO 4 – HCl Cl– HNO 3 NO 3 – H 3O + H 2O H 2C 2O 4 (oxalic acid) HC 2O 4 – [H 2SO 3] = SO 2(aq) + H 2O HSO 3 – HSO 4 – SO 4 2– HNO 2 NO 2 – HF F– HCO 2H (formic acid) HCO 2 – C 6H 5CO 2H (benzoic acid) C 6H 5CO 2 – HC 2O 4
Solutions can be acidic, basic, or neutral
Generally, a compound that is an acid or a base acts as an acid or a base only when it is dissolved in water In a water-based solution, these compounds produce ions Recall that an ion is a charged particle For example, if a hydrogen atom, which consists of one proton and one electron, loses its electron, it becomes a hydrogen ion The hydrogen
Test2 ch17a Acid-Base Practice Problems
7 Which one of the following is a conjugate acid–base pair? a NH 3 and NH 4 + d H 2O and O 2– b H 3O + and OH– e NaF and F– c NH 2-and NH 4 + 8 Which one of the following is a conjugate acid–base pair? a NaF and F– d NH 4 + and NH 2 – b HNO 3 and HNO 2 e H 2O and H 2O 2 c HI and I– 9 Which one of the following is
HEALTH & SAFETY Piranha Solution
1) Acid Piranha (most common): is a 3:1 mixture of concentrated sulfuric acid (H2SO4) with hydrogen peroxide (H2O2) 2) Base Piranha (least common): is a 3:1 mixture of ammonium hydroxide (NH4OH) with hydrogen peroxide (H2O2) Piranha solution must be prepared with great care It is highly corrosive and an extremely powerful oxidizer
2H O 2H O + O - CRDP
Acid /Base couple H 3 O +/H 2 O CH 3 COOH / CH 3 COO-H 2 O / HO - pKa 0 4,8 14 Document -2 1 Etude de la réaction entre l’acide éthanoïque et l’hydroxyde de Sodium 1 1 Ecrire l’équation-bilan de la réaction entre la solution d’acide éthanoïque (CH 3 COOH) et la solution d’hydroxyde de sodium ou de soude (Na++HO-) 1 2 Calculer
Peroxide Acid Method
your gold along with the base metals due to the excessive amount of chlorine produced If you think about the etching reaction you will realize that the active ingredient is the copper II chloride, not the peroxide or the muratic acid With this in mind the water is necessary to allow the exchange of the copper metal ions in liquid form
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