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Chemistry revision

Terms in this set (16)

Beta particles
Are electrons
The pH of a 0.2 M solution of nitrous acid is 2. Calculate the H3O+ conc ?
0.01 M
Discovered radiation
Henri becqueral
calculator the pH of a 0.01 m solution of HCl
2
Radioactivity
The spontaneous breaking up of certain unstable nuclei accompanied by the emission of radiation
Marie and Pierre curie
Discovered polonium and radium
Alpha particles
Consists of two protons and two neutrons
If the pH of a 0.2 m solution is 2.0 and the H3O+ conc is 0.01 M calculate the OH - ion concentrate for this acidic solution ?
1 x 10 -12 M
Is the time taken for half of the atoms in a sample of the isotope to decay
Half life
Find the pH of a 0.0001M solution of ammonia given that the ka value for this base is 1.8 x 10-5
9.6277
Who definition of a acid was as following: an acid is a substance the dissociates in aqueous solution forming hydrogen ions
Arrenhius
A what is an acid and base that differ by the presence or absence of a proton ?
Conjugate acid-base pair
NH3 + HCl = NH4 + Cl-
acording to B-L definitions of an acid base pair which two substance are acting as an acid
HCl and NH4+
pH is defined as
The negative log to the base 10 of the hydrogen ion concentration
Calculate the pH of a 0.001 M solution of ethanoic acid given that the ka value for this acid is 1.8 x 10-5
3.8723
If this pH of a sulfuric acid solution is 2 find the Molarity?
0.005 M
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