Terms in this set (14)
give two half equations to show the oxidation and Oxidation: Cl2 + 2H2O -> 2HClO + 2H+ + 2e
reduction processes that occur in
Cl2 + H2O <-> HClO + HCl Reduction: Cl2 + 2H+ + 2e- -> 2HCl
chlorine reacted with cold, aqueous NaOH when 2NaOH + Cl2 -> NaCl + NaClO + H2O
making bleach. give the equation
how do you go from g to mg x 1000
When potassium chlorate(VII) decomposes, it KClO4 → KCl + 2O2
produces potassium chloride and oxygen. Give an
equation for the decomposition of potassium ∆H = - 436 - - 434 = - 2 kJ mol-1
chlorate(VII)
KClO4 = -434 kJ mol-1
KCl = -436 kJ mol-1
, A sample of bromine was analysed in a time of flight mass of one ion of 79Br = 1.3 x 10^025
(TOF) mass spectrometer and found to contain two
isotopes, 79Br and 81Br. After electron impact time taken by 81Br ions = 6.8 x 10^-4
ionisation, all of the ions were accelerated to the
same kinetic energy (KE) and then travelled through a
flight tube that was 0.950 m long. 0 8 . 1 The 79Br+ ions
took 6.69 x 10-4 s to travel through the flight tube.
Calculate the mass, in kg, of one ion of 79Br+
Calculate the time taken for the 81Br+ ions to travel
through the same flight tube.
The Avogadro constant, L = 6.022 x 1023 mol−1
KE = 0.5 mv 2 where m = mass (kg) and v = speed (m
s-1 )
v =d/t where d = distance (m) and t = time (s)
Silicon tetrafluoride (SiF4) is a tetrahedral molecule. van der waals
Deduce the type of intermolecular forces in SiF4.
Explain how this type of intermolecular force arises uneven distribution of electrons indices dipole in nearby molecule.
and why no other type of intermolecular force exists not hydrogen bonds as no hydrogens bonded to F.
in a sample of SiF4
give two half equations to show the oxidation and Oxidation: Cl2 + 2H2O -> 2HClO + 2H+ + 2e
reduction processes that occur in
Cl2 + H2O <-> HClO + HCl Reduction: Cl2 + 2H+ + 2e- -> 2HCl
chlorine reacted with cold, aqueous NaOH when 2NaOH + Cl2 -> NaCl + NaClO + H2O
making bleach. give the equation
how do you go from g to mg x 1000
When potassium chlorate(VII) decomposes, it KClO4 → KCl + 2O2
produces potassium chloride and oxygen. Give an
equation for the decomposition of potassium ∆H = - 436 - - 434 = - 2 kJ mol-1
chlorate(VII)
KClO4 = -434 kJ mol-1
KCl = -436 kJ mol-1
, A sample of bromine was analysed in a time of flight mass of one ion of 79Br = 1.3 x 10^025
(TOF) mass spectrometer and found to contain two
isotopes, 79Br and 81Br. After electron impact time taken by 81Br ions = 6.8 x 10^-4
ionisation, all of the ions were accelerated to the
same kinetic energy (KE) and then travelled through a
flight tube that was 0.950 m long. 0 8 . 1 The 79Br+ ions
took 6.69 x 10-4 s to travel through the flight tube.
Calculate the mass, in kg, of one ion of 79Br+
Calculate the time taken for the 81Br+ ions to travel
through the same flight tube.
The Avogadro constant, L = 6.022 x 1023 mol−1
KE = 0.5 mv 2 where m = mass (kg) and v = speed (m
s-1 )
v =d/t where d = distance (m) and t = time (s)
Silicon tetrafluoride (SiF4) is a tetrahedral molecule. van der waals
Deduce the type of intermolecular forces in SiF4.
Explain how this type of intermolecular force arises uneven distribution of electrons indices dipole in nearby molecule.
and why no other type of intermolecular force exists not hydrogen bonds as no hydrogens bonded to F.
in a sample of SiF4
