Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
22 Cards in this Set
- Front
- Back
|
1 + ions
|
copper1, ammonium.
|
|
|
2 + ions
|
iron 2 , copper 2 , zinc , lead 2
|
|
|
3 plus ions
|
aluminium, iron 3 , chromium 3 ( Cr- )
|
|
|
2 minus ions
|
oxide, carbonate , sulphate , sulphide, dichromate 5,
|
|
|
1 minus ions
|
halogens and hydroxide , nitrate, hydrogen carbonate, hydrogen sulphate, chlorate 1 , ethanoate and cyanide
|
|
|
in the case of simple ions, the oxidation state shows...
|
the charge on the ion
|
|
|
simple anions have a name ending in
|
ide, e.g. Cl minus
|
|
|
ate and ite endings usually indicate that...
|
oxygen is present . They are oxyanions. e.g sulphate and sulphide
|
|
|
an acid is ...
|
a proton donor
|
|
|
vaporisation
|
an element injected at low pressures - gaseous atoms are produced
|
|
|
ionisation
|
atoms of the element are bombarded with a stream of high energy electrons from an electron gun - when a high energy electron hits an atom, an electron is knocked out of the atom to produce a positive ion . 2 e minus .
|
|
|
acceleration
|
the positive ions are accelerated by an electric field and focussed into a beam by passing through slits
|
|
|
deflection
|
the fast moving beam of ions is deflected by a magnetic field
|
|
|
detection
|
ions hit a charged plate - electron are transferred from the plate to the positive ions. a small current produced. size of current is proportional to the abundance or number of the ions
|
|
|
the greater the m z ratio ...
|
greater magnetic field strength needed to bring ions to the detector
|
|
|
a mass spectrometer separates the different ions by...
|
increase strength of magnetic field so ions of increasing m z are successfully brought to the detector
|
|
|
ions with the same m z value will...
|
behave in the same way in the mass spectrometer
|
|
|
removal of 2 electrons unlikely because...
|
takes a lot more energy . less likely to happen. peak will be smaller as small abundance
|
|
|
gas in car exhaust gases. peak at 28 m z 28.0061
|
N2
|
|
|
|
|
|
|
|
|
|
|
|
|
