Section – B - About iTutoring
... When salt is added to water, ions of salt react with water and produce acid and base is known as hydrolysis. (67). Which instrument is used to determine accurate pH of solution? pH meter is used to measure pH. (68). What is meant by hydrolysis constant ? Hydrolysis reaction is an equilibrium reactio ...
... When salt is added to water, ions of salt react with water and produce acid and base is known as hydrolysis. (67). Which instrument is used to determine accurate pH of solution? pH meter is used to measure pH. (68). What is meant by hydrolysis constant ? Hydrolysis reaction is an equilibrium reactio ...
Kinetic investigation of low-pH Fe(II) oxidation and development of a
... mainly from the group Acidithiobacillus Ferrooxidans. However, this method suffers from two major drawbacks: (1) the dependence of the process on the sensitive autotrophic biomass and (2) the relatively rapid precipitation of Fe(III) solids, mostly of the jarosite group. The current work investigate ...
... mainly from the group Acidithiobacillus Ferrooxidans. However, this method suffers from two major drawbacks: (1) the dependence of the process on the sensitive autotrophic biomass and (2) the relatively rapid precipitation of Fe(III) solids, mostly of the jarosite group. The current work investigate ...
Lab Manual (Eng. Medium)
... top (zero) calibration mark and then drained into a separate container until the calibration mark for the desired volume is reached. The remaining liquid is either discarded or returned to its original container. The maximum indicated capacity of some graduated pipettes is delivered by draining to a ...
... top (zero) calibration mark and then drained into a separate container until the calibration mark for the desired volume is reached. The remaining liquid is either discarded or returned to its original container. The maximum indicated capacity of some graduated pipettes is delivered by draining to a ...
HOTS Worksheet
... Q. 1. When a mixture of salicylic acid, acetic anhydride and acetic acid is refluxed, what is the product obtained and what is its use in everyday life ? Ans. Aspirin used as analgesic. Q. 2. Distinguish between a narrow spectrum and broad spectrum antibiotic. Ans. A narrow spectrum antibiotic work ...
... Q. 1. When a mixture of salicylic acid, acetic anhydride and acetic acid is refluxed, what is the product obtained and what is its use in everyday life ? Ans. Aspirin used as analgesic. Q. 2. Distinguish between a narrow spectrum and broad spectrum antibiotic. Ans. A narrow spectrum antibiotic work ...
Preparatory Problems of the 40th IChO - IChO-2016
... found in a recess behind a sliding panel just above the right bell-pull in poor Browning’s sitting-room. ’No doubt the murderers were after this box,’ said he. ’They searched the house from cellar to garret. I would have been at a loss myself if I had not met Irene Adler some time ago...’ My attenti ...
... found in a recess behind a sliding panel just above the right bell-pull in poor Browning’s sitting-room. ’No doubt the murderers were after this box,’ said he. ’They searched the house from cellar to garret. I would have been at a loss myself if I had not met Irene Adler some time ago...’ My attenti ...
chapter 20 - United International College
... electrodes (see Figure 19.1 of the text). If we physically separate the oxidizing agent from the reducing agent, the transfer of electrons can take place via an external conducting medium (a metal wire). ...
... electrodes (see Figure 19.1 of the text). If we physically separate the oxidizing agent from the reducing agent, the transfer of electrons can take place via an external conducting medium (a metal wire). ...
МЕТОДИЧЕСКИЕ УКАЗАНИЯ СТУДЕНТАМ
... running water. Spilled concentrated acids and alcalies mist be cavered with sand and cleaned away. • If a thermometre is broken up and mercury spills, it should be collected with a special trap or a bulb. The minute particles of mercury are collected with a crush made of white tin. The surface of th ...
... running water. Spilled concentrated acids and alcalies mist be cavered with sand and cleaned away. • If a thermometre is broken up and mercury spills, it should be collected with a special trap or a bulb. The minute particles of mercury are collected with a crush made of white tin. The surface of th ...
Concept based notes Chemistry Lab Manual
... It is a solution of copper sulphate. Q. 87. What is fehling’s solution B? Ans. It is a solution of sodium hydroxide containing sodium potassium tartrate. Q. 88. What is chromatography? Ans. It is technique for rapid and efficient separation of components of a mixture and purification of compounds. Q ...
... It is a solution of copper sulphate. Q. 87. What is fehling’s solution B? Ans. It is a solution of sodium hydroxide containing sodium potassium tartrate. Q. 88. What is chromatography? Ans. It is technique for rapid and efficient separation of components of a mixture and purification of compounds. Q ...
Acid-Base Biochemistry
... Acid-Base Biochemistry Physiology Importance of Renal Bicarbonate Regeneration ► Bicarbonate is freely filtered through the glomerulus so plasma and glomerular filtrate have the same ...
... Acid-Base Biochemistry Physiology Importance of Renal Bicarbonate Regeneration ► Bicarbonate is freely filtered through the glomerulus so plasma and glomerular filtrate have the same ...
chemistry - Brilliant Public School Sitamarhi
... The well known mineral fluorite is chemically calcium fluoride. It is known that in one unit cell of this mineral there are 4 Ca2+ ions and 8F– ions and that Ca2+ ions are arranged in a fcc lattice. The F– ions fill all the tetrahedral holes in the fcc lattice of Ca2+ ions. The edge of the unit cell ...
... The well known mineral fluorite is chemically calcium fluoride. It is known that in one unit cell of this mineral there are 4 Ca2+ ions and 8F– ions and that Ca2+ ions are arranged in a fcc lattice. The F– ions fill all the tetrahedral holes in the fcc lattice of Ca2+ ions. The edge of the unit cell ...
content - Thesis Scientist
... 28. Conductivity of 0.00241 M acetic acid solution is 7.896 ´ 10 -5 S cm -1 . Calculate its molar conductivity in this solution. If L°m for acetic acid is 390.5 S cm 2 mol -1 , what would be its dissociation constant? OR Three electrolytic cells A, B and C containing solutions of zinc sulphate, silv ...
... 28. Conductivity of 0.00241 M acetic acid solution is 7.896 ´ 10 -5 S cm -1 . Calculate its molar conductivity in this solution. If L°m for acetic acid is 390.5 S cm 2 mol -1 , what would be its dissociation constant? OR Three electrolytic cells A, B and C containing solutions of zinc sulphate, silv ...
Physical Sciences Grade 10 Term 2
... tube and fills the test tube up to the ¾ mark with water. The contents of the test tube are then shaken vigorously to dissolve the chemicals, use a rubber stopper to close the test tube before shaking it. If possible measure the mass of all the test tubes with their contents and record this mass. To ...
... tube and fills the test tube up to the ¾ mark with water. The contents of the test tube are then shaken vigorously to dissolve the chemicals, use a rubber stopper to close the test tube before shaking it. If possible measure the mass of all the test tubes with their contents and record this mass. To ...
Chapter 4 "Reactions in Aqueous Solution"
... There are many reasons for carrying out reactions in solution. For a chemical reaction to occur, individual atoms, molecules, or ions must collide, and collisions between two solids, which are not dispersed at the atomic, molecular, or ionic level, do not occur at a significant rate. In addition, wh ...
... There are many reasons for carrying out reactions in solution. For a chemical reaction to occur, individual atoms, molecules, or ions must collide, and collisions between two solids, which are not dispersed at the atomic, molecular, or ionic level, do not occur at a significant rate. In addition, wh ...
IntroEMLabManual3rdEdV2
... To understand how the three previous concepts conspire to affect the power used by a component (as observed with bulb brightness). How to compare the currents and resistances of different circuits. To use a DMM to measure current, voltage and resistance (all have a different ...
... To understand how the three previous concepts conspire to affect the power used by a component (as observed with bulb brightness). How to compare the currents and resistances of different circuits. To use a DMM to measure current, voltage and resistance (all have a different ...
National German Competition and Problems of the IChO
... At first 750 mmol of compound A der Verbindung A react with potassiumhydroxide solution (w(KOH) = 60 %) and then with a solution of 750 mmol of B. After recovery you get a compound C with a singlet at = 3.691 in its 1H-NMRspectrum in CDCl 3. ...
... At first 750 mmol of compound A der Verbindung A react with potassiumhydroxide solution (w(KOH) = 60 %) and then with a solution of 750 mmol of B. After recovery you get a compound C with a singlet at = 3.691 in its 1H-NMRspectrum in CDCl 3. ...
Fulltext: english,
... from CV and DPV were found to be similar. For this reason, only DPV results are given as I vs. pH and E vs. pH plots in Figure 3a and Figure 3b for GCE. The peak current (ip) versus pH plot shows that the peak current was maximum and the shape of curve was better in 0.04 M BR (pH 8.05) buffer (Figur ...
... from CV and DPV were found to be similar. For this reason, only DPV results are given as I vs. pH and E vs. pH plots in Figure 3a and Figure 3b for GCE. The peak current (ip) versus pH plot shows that the peak current was maximum and the shape of curve was better in 0.04 M BR (pH 8.05) buffer (Figur ...
History of electrochemistry
Electrochemistry, a branch of chemistry, went through several changes during its evolution from early principles related to magnets in the early 16th and 17th centuries, to complex theories involving conductivity, electric charge and mathematical methods. The term electrochemistry was used to describe electrical phenomena in the late 19th and 20th centuries. In recent decades, electrochemistry has become an area of current research, including research in batteries and fuel cells, preventing corrosion of metals, the use of electrochemical cells to remove refractory organics and similar contaminants in wastewater electrocoagulation and improving techniques in refining chemicals with electrolysis and electrophoresis.