Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Chem 107 Exam 2

TermDefinition
synthesis reaction A+B --> AB marriage
decomposition reaction AB --> A + B divorce
single replacement AX + B --> A + BX bad prom
double replacement AX + BY --> AY + BX switching partners
always soluble 1A (Li, Na, K, Rb, Cs) NH4+ NO3- acetate (C2H3O2-) ClO4-
everything is soluble with Cl-, Br-, I- except Ag+, Pb2+, Cu+ and Hg2+
everything is soluble with SO4 2- except Ca2+, Sr2+, Ba2+, Pb2+
OH- solubility insoluble (except 1A, NH4, Ca/Sr/Ba 2+)
CO3 2- and PO4 3- solubility insoluble (except group 1A and NH4)
S2- insoluble (except group 1A and NH4 and Ca/Sr/Ba 2+)
O2 gas glowing splint burning splint O2 gas glowing splint - reignite burning splint - stay burning
CO2 gas glowing splint burning splint CO2 gas glowing splint - distinguished burning splint - distinguished
H2 gas glowing splint burning splint H2 gas glowing splint - nothing really burning splint - pop/explosion
water and electricity decomposition 2H2O --> 2H2 + O2
copper (II) chloride and aluminum 3CuCl2 + 2Al -->2AlCl3 + Cu single replacement
lead (II) nitrate and potassium iodide Pb(NO3)2 + 2KI --> PbI + 2K(NO3) double replacement
sodium and chlorine gas 2Na + Cl2 --> 2NaCl synthesis
magnesium and air 2Mg + O2 --> 2MgO synthesis
magnesium oxide and water MgO + H2O --> Mg(OH)2 synthesis
sodium hydrogen carbonate NaHCO3 --> NaCO3 + H2O + CO2 decomposition
hydrogen peroxide 2H2O2 --> O2 + 2H2O decomposition
silver nitrate and copper Ag(NO3) + Cu--> Cu(NO3) + Ag single replacement
hydrochloric acid and zinc 2HCl +Zn --> ZnCl2 + H2 single replacement
sodium carbonate and calcium nitrate Na2CO3 + Ca(NO3)2 --> Ca(CO3) + 2Na(NO3) double replacement
sodium hydroxide and copper (II) sulfate 2NaOH + Cu(SO4) --> Cu(OH)2 + Na2SO4 double replacement
what is equilibrium constants of reactant and products are constant (not equal!) forward and reverse reactions are the same rate
Le Chatlier's equation lnKeq = -deltaH/R (1/T) + deltaS/R
when you increase pressure you _______ volume, which means the equilibirum shifts to the side with ____ gas moles when you increase pressure you decrease volume, which means the equilibirum shifts to the side with less gas moles
when m is positive delta H is negative
electrons have spin which gives them a tiny ______ _______ unpaired electrons have no other electron to cancel out their spin making them ______ electrons have spin which gives them a tiny magnetic field unpaired electrons have no other electron to cancel out their spin making them magnetic
paramagnetic at least one unpaired electron, attracted by magnetic fields
diamagnetic no unpaired electrons slightly repelled by magnetic fields
formation of ferrofluid FeCl2 + 2FeCl3 + 4H2O --> Fe3O4 + 8HCl
2 roles of ammonia 1 NH3 is a base, neutralizes the acid HCl this makes the acid "go away" and equilibrium shifts to the right making more product 2 add ammonia slowly to avoid large clumps of precipitate and to actually form small bits of nanoparticles
surfactant nanoparticles in water clump together because of magnetic attraction surfactant coats them to prevent clumping
surfactant - tetramethylammonium hydroxide the hydroxide (-) sticks to the magnetite and the (+) TMA is on the outside repelling each other
Fe2+ 3d6 II I I I I I
Fe3+ 3d5 I I I I I I
magnetite and a magnet forms spikes because the magnetic force pulls up and surface tension pulls down the fluid climbs up the magnetic field lines
how to measure in a graduated cylinder to the nearest two decimal places, must be an even number
conductivity titration curve very high with a strong acid completely dissociated goes down as acid is made up into base goes back up at equivalence point after more OH- has been made
temperature exothermic endothermic exothermic - goes up (releases heat) and then cools down to room temp after eq point endothermic - goes down (uses up the heat) and then heats back up to room temp
equation showing colorless to red Fe3+ + SCN- --> FeSCN 2+ + heat
colorless solution means no absorbance (because all wavelengths were transmitted and none were absorbed)
Created by: anyasalmon
 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards