## Search found 9 matches

Fri Dec 04, 2015 10:24 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Coordination Numbers and Shape
Replies: 3
Views: 944

### Coordination Numbers and Shape

How do you use the Coordination number of a compound o determine it's shape without drawing it out?
Tue Dec 01, 2015 3:39 pm
Forum: *Making Buffers & Calculating Buffer pH (Henderson-Hasselbalch Equation)
Topic: Salts in Solutions
Replies: 2
Views: 372

### Re: Salts in Solutions

If it's a cation and an anion, then you can assume its a salt. Overtime, common salts become familiar. Use the Henderson-Hasselbach equation (pH = pKa + log (A-)/(HA)) to determine the pH of buffer solutions.
Tue Dec 01, 2015 3:29 pm
Forum: *Titrations & Titration Calculations
Topic: Titrant Equations
Replies: 2
Views: 508

### Re: Titrant Equations

I think you are referring to finding the pH of a titrant at the equivalence point, in which you need to assume that all of the NH3 was used and thus you write the reverse reaction. Initially, the equation is NH3 + H20 <-> NH4 + OH- but after titrating, all of the NH3 has been neutralized, therefore ...
Tue Dec 01, 2015 3:17 pm
Forum: *Titrations & Titration Calculations
Topic: Tirtrants- Calculating the pH at equivalence point
Replies: 1
Views: 353

### Tirtrants- Calculating the pH at equivalence point

In weak base, strong acid titrations, how do you find the chemical formula for finding the pH at equivalence point?
ex. 50.0 mL of 0.250 M NH3 (Kb= 1.8x10^-5) with 0.500 M HCL.
Mon Nov 23, 2015 10:40 am
Forum: Amphoteric Compounds
Topic: How to draw conjugate acids and bases
Replies: 1
Views: 1923

### How to draw conjugate acids and bases

Do we have to know how to draw conjugate acids and bases in lexis dot form?If so, how do we determine how to do so?
Sun Nov 15, 2015 12:14 am
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: ICEBOX
Replies: 2
Views: 423

### ICEBOX

How do you know when to use the ICEBOX?
Mon Oct 26, 2015 12:38 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Lewis Structures
Replies: 1
Views: 206

### Lewis Structures

How do you determine whether the Lewis structure is complete in ions?
Tue Oct 20, 2015 12:08 am
Forum: Lewis Structures
Topic: Lewis Dot Structure model
Replies: 4
Views: 461

### Re: Lewis Dot Structure model

A lot of the time there is also resonance, so as long as you fulfill the octet rule, then you should be fine.
Thu Oct 08, 2015 1:41 pm
Forum: Limiting Reactant Calculations
Topic: Ratio between Products and Reactant
Replies: 1
Views: 432

### Ratio between Products and Reactant

If an equation has two reactants but three products, how do you determine the molar ration between the products between reactants and products? (i.e. 2NBr3 + 3NaOH ---> N2 + 3NaBr + 3HOBr)