log a U pH °C Uraninite U UOH U(OH) –16 –14

Slides:

Advertisements

Similar presentations

Support.ebsco.com Using the Search History Feature Tutorial.

Advertisements

Drag and drop. You can use TEdit to drag entries from one thermo dataset (the source) into another (the target). Open both datasets in TEdit and select.

K d, Freundlich, and Langmuir isotherms. File → New → Sorbing Surfaces → Kd Pull aqueous species from a thermo dataset Enter a unique identifier for the.

Acids and Bases Calculating Percent Ionization Percent Ionization =  100 In this example [H 3 O + ] eq = 4.2  10 −3 M [HCOOH] initial = 0.10 M [H 3 O.

Enter your fluid composition on the Basis pane. SpecE8 figures concentrations of aqueous and sorbed species, mineral saturation, and gas fugacity. Go to.

Polymorphs. Config → Show… “Albite high” and “Albite low” are two polymorphs of Albite. Begin typing the species’ name to find it faster. Choose the type.

TRIVIA Click for Question What kind of matrix contains the coefficients and constants of a system of linear equations? An augmented matrix Click for:

Class Definition: Maintaining a physical and chemical equilibrium within your body. Picture: My Definition: I maintain homeostasis by…

Act2 generates stability diagrams on activity, Eh, pe, pH, and fugacity axes. Select main species to diagram. Diagram axes.

Unit 8: Acids & Bases PART 2: pH, pOH & pK w. The pH Scale pH is a value chemists use to give a measure of the acidity or alkalinity of a solution. Used.

From GWB apps, File → View → …\thermo.tdat From TEdit, File → Open → Thermo Data… → …\thermo.tdat From Windows explorer, double-click the file You can.

Viewing thermo datasets in TEdit. From GWB apps, File → View → …\thermo.tdat From TEdit, File → Open → Thermo Data… → …\thermo.tdat From Windows explorer,

We’ll use equilibrium concepts to explain how a buffer solution minimizes the change in pH when a small amount of base is added. Buffer Solutions -How.

Enzymes Aims: Must be able to outline the role of enzymes. Should be able to describe how the process happens. Could be able to explain factors affecting.

Step 1: Place x 2 term and constant into the box 2x 2 2 PROBLEM: 2x 2 + 5x + 2.

Run → Go draws the diagram Add any background ions Set temperature Select main species to diagram Choose axes Act2 generates stability diagrams on activity,

EDTA EthyleneDiamineTetraacetic Acid, a compound that forms strong 1:1 complexes with most metal ions. EDTA is a hexaprotic system, designated H 6 Y 2+.

Weak Acids & Bases Chapter 16. Dissociation Constants Since weak acids do not dissociate completely, [H 3 O + ] ≠ [acid] For a generalized acid dissociation,

Right-click on unit field to convert units GSS is a spreadsheet for manipulating and plotting geochemical data.

1 The Reaction Program. 2 Add species windows by clicking + Enter a balanced reaction. Leave Phase as most stable. Press Next Units can be changed from.

Balance chemical reactions. Start by choosing a species to appear on the left side of the reaction. Move to the Results pane. Rxn writes a reaction with.

Chapter 17 Stability of minerals. Introduction Kinetics (the rate of reactions): Kinetics (the rate of reactions): –Reaction rates slow down on cooling.

Numeracy Resources for KS1 Counting Objects 1 to 10 Number Line 1 to 10 Number Track 1 to 10 Number Line 1 to 20 Number Track.

K w, pH, and pOH. IONIZATION OF WATER Water is capable of reacting with itself in an ionization reaction H 2 O (l) + H 2 O (l) ⇌ H 3 O + (aq) + OH - (aq)

Act2 and Tact Calculate stability diagrams on activity, fugacity, and temperature axes. Calculate solubility diagrams. Project traces of React runs onto.

Chap 5. Energy Relationships; Concepts and applications to homogeneous systems.

Using the Search History in EBSCO Interfaces

Enter your fluid composition on the Basis pane

File → Open → Thermo Data…

Numeracy Resources for KS1

Examples of Poor Primary Keys

What Are Preservatives And Additives.

Configure a redox-pH diagram for Arsenic

Set the initial fluid composition on the Basis pane.

Equilibrium equations

Equilibrium temperature

Le Chatelier’s Principle

Le Chatelier’s Principle

الفعل ورد الفعل ♠ ♠ ♠ مجلس أبوظبي للتعليم منطقة العين التعليمية

Set the composition of the initial fluid on the Basis pane.

7. ½ NO2- + ½ H2O = ½ NO3- + H+ + e log K = -14.1

Choose SO4−− for the x-axis, then swap in a fugacity ratio.

Two-layer datasets.

Factors That Affect Equilibrium

Lesson 4: Advanced Transforms

PH and Concentrations.

30 A 30 B 30 C 30 D 30 E 77 TOTALS ORIGINAL COUNT CURRENT COUNT

To create a permanent ‘my folder’ in Discovery:

Transfer thermo data.

Add and delete entries.

Lesson # 7 Equilibrium & pH

Contents Click to add Title Click to add Title Click to add Title

Deduce, from orders, a rate equation of the form rate = k[A]m[B]n.

THE EQUILIBRIUM CONSTANT

Force and Motion Recap.

YOUR text YOUR text YOUR text YOUR text

Le Chatelier's Principle

Chemical Equilibria Department of Civil Engineering

CLICK TO START.

Determine the units for Kc.

Click to add text text DIAGRAM.

CLICK TO START.

• State le Chatelier’s principle.

Chemical Equilibrium Mass transfer takes place from higher chemical potential to lower chemical potential. If the chemical potential of reactants are.

Call Now : Click : -

Call Now : Click : -

Call Now : Click : -

Presentation transcript:

log a U pH ++++ 25°C Uraninite U UOH U(OH) 2 4 6 8 10 12 14 –16 –14 2 4 6 8 10 12 14 –16 –14 –12 –10 –8 –6 pH log a U ++++ U U(OH) ++ 3 + 5 - UOH +++ Uraninite 25°C Log K = -3.5 Log K = -4.6383

Use the “Alter log Ks” option to adjust the equilibrium constant for a reaction without permanently modifying a thermo dataset.

add → Mineral… → Uraninite Config → Alter Log Ks… Top row values are preserved in the dataset. Temporarily adjust the reaction’s log K at any principal temperature, then click Apply. add → Mineral… → Uraninite

The stability field for Uraninite has decreased. Original diagram