Save
Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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
share
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

GROUP2/2

QuestionAnswer
THERMAL STABILITY DEPENDS ON .... POLARISATION POWER OF CATION DUE TO CHARGE DENSITY.
THE LARGER CHARGE AND SMALLER RADIUS THE ... GREATER CHARGE DENSITY.
COMPOUND THAT HAVE CATIONS THAT STRONGLY POLARISE THE ANION ARE ... MORE EASILY DECOMPOSED.,
MEAN THAT IN GROUP 1.2 THE EASE OF DECOMPOSITION... DECREASES DOWN THE GROUP –
WHY IS GROUP 1,2 DOES THE EASE OF DECOMPOSITION DECREASE DOWN THE GROUP ... COZ IONIC RADIUS INCREASES DOWN GROUP AND REDUCES THE POLARISING POWER.
GROUP 2 HAS 2+ CHARGE AND SMALLER RADIUS THAN GROUP 1.-SO WHY ARE GROUP 2 CATIONS ARE MORE POLARIZING THAN GROUP 1... HAS 2+ CHARGE AND SMALLER RADIUS THAN GROUP 1.
BECAUSE GP2 ARE MORE POLARIZING THAN GROUP 1... THEY ARE LESS STABLE WHEN HEATED AND DECOMPOSE EASILY.
ALL GROUP 1 NITRATES DECOMPOSE ... ON GREATER HEATING ,
THE NITROGEN DIOXIDE IS VISIBLE ... AS BROWN GAS. 4LINO3 2LI2O + 4NO2 + O2
THE SMALLER RADIUS OF LITHIUM CAUSES . .. HIGHER CHARGE DENSITY WHICH POLARISE THE O-N BOND IN NITRATE ION TO BREAK IT AND FORM O2- IONS.
WHY CAN’T THE OTHER GROUP 1 DECOMPOSE LIKE LITHIUM .. . TOO LARGE TO POLARISE TO THIS EXTENT. THUS ON HEATED THEIR NITRATES DO NOT DECOMPOSE TO FORM AN OXIDE. BUT STRONG HEATING CAUSED THEM TO MELT, GIVE OFF OXYGEN AND LEAVING MOLTEN NITRATE NO2- ION.
NITRATE IONS IN A GROUP 2NITRATE ARE POLARISED BY ... 2+ RESULT IN THERMAL DECOMPOSITION.
ON HEATING GROUP 2 NITRATES DECOMPOSE TO ... METAL OXIDES , NITROGEN OXIDE AND OXYGEN.
THE TEMP AT WHICH THERMAL DECOMPOSITION OCCURS IS LOWEST FOR ...’BERYLLIUM NITRATE AND HIGHEST FOR BARIUM NITRATE. MG(NO3)2  2MGO + 4NO2 + O2.
WHICH CARBONATE DECOMPOSES WHEN HEATED ONLY .. LITHIUM CARBONATE DECOMPOSES WHEN HEATED.
WHY DOES ONLY LITHIUM CARBONATE DECOMPOSES WHEN HEATED ... LI+ CATION VERY SMALL POLARISES O-C BOND IN THE C032- ION SUFFICIENTLY FOR IT TO BREAK AND FORM AN O2- ION. LI2CO3 LI2O + CO2.
THE OTHER GROUP 1 CATIONS LARGE RADII & ... CANT’ POLARISE TO CAUSE DECOMPOSITION OF ANHYDROUS CARBONATES, WHEN HYDRATED CARBONATES HEATED UP ....
WHEN HYDRATED CARBONATES HEATED ... STEAM GIVEN OFF.
GROUP 2 METALS OXIDATIVE STATE IS... +2 .
REACTIVITY INCREASES DOWN GROUP2 ... COZ EASIER TO REMOVE 2 OUTER E-.
ALL GROUP 2 METALS BURN IN AIR & FORM IONIC OXIDES E.G. 2CA +O2 à 2CAO .
BERYLLIUM CARBONATE IS SO UNSTABLE THAT IT ... IS DOSENT EXIST AT ROOM TEMP.
DECOMPOSITION EQUATION OF CAC03 IS ... CACO3 à CA0+CO2.
BARIUM CARBONATE BACO3 REQUIRES ... STRONG HEATING BEFORE IT DECOMPOSES.
IONS WITH LOW CHARGE DENSITY BA2+ K+ FORM .. . CARBONATES THAT ARE STABLE TO HEAT. /HARD TO DECOMPOSE
IONS WITH HIGH CHARGE DENSITY MG2+ LI+ FORM CARBONATES ... THAT ARE EASILY DECOMPOSED.
Created by: ufuoma
 

 



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