Acids, alkali and analysis Flashcards
If there is more H+ ions than OH- ions its an…
acid
If there is more OH- ions than H+ ions its an…
alkali
If there is equal number of OH- AND H+ ions then its…
neutral
What is the pH range of acids
1-6
What is the pH range of alkalis
8-14
What is a neutral pH
7
what colours can you get from an acid with universal indicator
red(strongest), orange, yellow(weakest)
What colours can you get from an alkali with universal indicator
Light blue/ blue(weakest)-light purple/dark purple(strongest)
What colour do you get from neutral with universal indicator
green
alkali example
sodium hydroxide, bleach, oven spray
neutral example
water
What is a salt
any metal compounds made from an acid
Indicator examples
universal indicator, phenolphalein, methyl orange
how can you neutralize an acid or alkali
titration
the stronger the acid the …… the number
lower
The stronger the alkali the ……. the number
higher
why do solids not have a pH
they must be a liquid to measure pH
How do you name a salt
First name from metal, second name from acid
Can acids and alkali conduct electricity
yes
titration equipment
pipette, burette, pipette filler
example of bases
metal hydroxide, metal oxides, metal carbonate, ammonia solution
what does a neutralization reaction always produce
salt + water (CO2 for carbonates)
metal oxides become ……. when dissolved in water
alkalis
non metal oxides become ……. when dissolved in water
acids
when and acid or alkali is diluted its pH.…..
gets closer to 7
separating techiques
filtration, evaporation, distilation
method of separating solutes in solution
chromotography
examples of chromatography
drug analysis, analyzing sugar in food, clothing anyalysing
how close do titers need to be to use for averages
0.1cm3
what is a precipitation
test for some negative ions
method of testing pH of lakes, river ect.
pH probe, pH paper, universal indicator
Qualitive analysis example
flame test, pH
quantitive analysis example
titrations
what titre do you never use for average
rough titre
effects of acid rain
trees and animals can die
what is qualitive analysis
analyzing whats in there-using own judgement
effects of acid rain
trees and animals can die
what does a flame test do
identify metal in salts
