Can i have some help with these questions?
Thank you for your help
The concentration of ClO– ions in bleach solution can be found by reaction with
iodide ions.
The overall equation for this reaction is shown.
ClO- + 2I- + 2H+ → I2 + Cl- + H2O
A sample of bleach solution was found to contain ClO– ions with a concentration of
0.0109 mol dm–3
Potassium iodide is added to a 20.0 cm3 portion of this bleach solution.
Calculate the mass, in mg, of potassium iodide needed to react with all of the
ClO– ions in the sample of bleach.
Give your answer to the appropriate number of significant figures.
Give one observation during this reaction.
2)A sample of bromine was analysed in a time of flight (TOF) mass spectrometer and
found to contain two isotopes, 79Br and 81Br
After electron impact 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.