CHEMISTRY COMMUNITY

fgalasso1b

The slow step should be given to us.

fgalasso1b

The slow step is the rate-determining step.

fgalasso1b

Isolated: Thermos, calorimeter, universe
Closed: coffee cup with lid, a grill

fgalasso1b

No, just know where they come from and how.

fgalasso1b

In zero order, the rate only depends on k. The concentration does not affect the rate.

fgalasso1b

Aqueous implies H20 already.

fgalasso1b

It is because since you need more energy to build up, the longer it takes to acquire the energy for the reaction to take place.

fgalasso1b

A comma separates molecules of the SAME phase.
A single line | separates molecules of different phases.
A double line || separates the electrodes.

fgalasso1b

It means Cu2+ is a stronger oxidizing agent which means it has a high E reduction potential.

fgalasso1b

In acidic solutions, add H20 to balance oxygen atoms, and add H+ to balance hydrogen atoms.

fgalasso1b

Yes, it's called a disproportionation reaction (when an element is both being oxidized and reduced).

fgalasso1b

You have to balance the H20 with H+ on the other side, but since it's a basic solution, you have to add OH- to the side you added H+ to, which then just becomes H2O.

fgalasso1b

Oxidized: losing electrons
Oxidizing agent: the molecule that is doing the oxidation, also the one that is being reduced (gaining electrons)

fgalasso1b

How does pressure and the equilibrium constant affect Gibbs Free Energy?

fgalasso1b

The comma separates those in the same phase whereas the single line separates those of different states (ie (s)|(aq)).

The double line separates the electrodes.

fgalasso1b

Is there going to be homework due this week?

fgalasso1b

What is going to be on Test 3?

fgalasso1b

J/mol or kJ/mol

fgalasso1b

q= m deltaH

heat = mass x enthalpy of fusion/vap

fgalasso1b

You can use it interchangeably since q=mCdeltaT asks for the CHANGE in temperature so the change in celsius is the same as the change in K.

fgalasso1b

yes because they exchange matter and energy with its surroundings.

fgalasso1b

Done on is + (positive), because the surroundings are releasing energy for the system to absorb the energy.
Done by is - (negative), because the system has to use their energy which results in a release which is negative.

fgalasso1b

Enthalpy is the heat absorbed/released in a reaction. Phase changes are a physical reactions so they also have enthalpies.

fgalasso1b

The ideal gas law demonstrates the relationships between pressure, volume, moles, and temperature. It is crucial to finding different values.

fgalasso1b

A type of system is determined depending on whether it exchanges matter and energy with the surroundings. Since there's no surroundings around the universe, there's no exchange of matter and energy which makes it isolated.

fgalasso1b

Solids and liquids do not undergo compressions or expansions which makes their volume change zero.

fgalasso1b

It is determined whether the system exchanges matter and energy with the surroundings. Since there's no surroundings around the universe, it's isolated.

fgalasso1b

We had to memorize our Strong Acids and Bases which are HCl - hydrochloric acid HNO3 - nitric acid H2SO4 - sulfuric acid (HSO4- is a weak acid) HBr - hydrobromic acid HI - hydroiodic acid HClO4 - perchloric acid HClO3 - chloric acid. Potassium hydroxide (KOH) Sodium hydroxide (NaOH) Barium hydroxide...

fgalasso1b

a pH of 7 is neutral. Water at room temperature (25C) has a pH of 7, however depending on the temperature change, the pH can slightly increase or decrease. For example, when you boil water the pH slightly decreases (more acidic) due to the increase of ionization.

fgalasso1b

Basically V1/T1 = V2 / T2

fgalasso1b

Both solids and liquids are pure so they don't have a concentration. Having no concentration means they are not included in the calculations of K or Q.

fgalasso1b

Both solids and liquids are pure so they don't have a concentration. Having no concentration means they are not included in the calculations of K or Q.

CHEMISTRY COMMUNITY

Search found 32 matches

Re: Slow Step

Re: slow step and fast step

Re: Closed vs Isolated

Re: Derivations

Re: Zero Order Reactions

Re: H2O in Cell Diagrams

Re: speed of reaction based on activation energy

Re: Cell Diagram notation

Re: "Strongly oxidizing"

Re: Balancing Rules for Redox Reactions

Re: Oxidizing and Reducing Agent

Re: balancing basic half reactions

Re: oxidized vs oxidizing agent

Gibbs Free Energy and Pressure and K

Re: Cell Diagram

Homework

test 3

Re: Units

Re: Phase Changes

Re: Finding Heat

Re: Engine and Body Open system

Re: Work Done By vs. On

Re: Phase changes and enthaplies

Re: pV=nRT

Re: Universe as a Thermodynamic System

Re: PΔV of Solids and Liquids

Re: Isolated Systems

Re: Acids and Bases

Re: Kw

Re: Charles’s Law

Re: Reaction Quotient

Re: Reaction Quotient