Flashcards
Group 2
Cards in this deck (13)
- 1DescriptionAlkaline earth metals
- 2What type of agent are they?[RA], lose 2 e- to form 2+ cations, oxidised.
- 3Redox w/ O22Ca + O2 -> 2Cao (s)
- 4Redox w/ H2OSr(s) + H2O(l) -> Sr(OH)2(aq) + H2(g)
- 5Redox w/ dilute acidBa(s) + 2HCl(aq) -> BaCl2(aq) + H2 (g)
- 6Trend in reactivity and IEReactivity increases down a group
IE decreases down a group. - 7Oxide w/ H2OCaO + H2O -> Ca2(aq) + 2OH- (aq)
Solution of alkaline hydroxide - 8Formation of hydroxideCa2+(aq) + 2OH- -> Ca(OH)2 (S)
- 9Trends in solubility of group 2 metal hydroxidesSolubility - ability to form bonds w/ H2O
Release more OH- ions
pH/alkalinity/sol. ^ down a group - 10Mg/Ba(OH)2 pH formedMg ~ 10
Ba ~ 13 - 11Use of G2 compounds as bases - 2 examplesNeutralise acidic soil to form neutral water
Antacids for indigestion - 12Example of 1.Ca(OH)2(s) + H+(aq) -> Ca2+ (aq) + H2O (l)
- 13Examples of 2Milk of magnesia
Mg(OH)2(s) + 2HCl(aq) -> MgCl2(s) + 2H2O(l)
CaCO3(s) + 2HCl(aq) -> CaCl2(aq) + H2O (l)
Information
- Description
- User has deleted their subject information Flashcards on Group 2, created by Deleted user on 27/04/2018.
- Created by
- Deleted user · Apr 2018
- Updated
- Apr 27, 2018
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- History
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- Created by I Shouldn't be awake · Apr 19, 2018
- Copied by I Shouldn't be awake · Apr 27, 2018
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