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BTEC Applied Science chemistry Unit 18 learning aim A
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BTEC Applied Science chemistry Unit 18 learning aim A
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Unit 18: Industrial Chemical ReactionsA: Investigate chemical thermodynamic in order to understand spontaneous
reactions
Enthalpy and Entropy
Introduction:
In this investigation the aim was to carry out the following investigation to
demonstrate accurate measurement of enthalpy changes. The calculations of
different enthalpy changes were to be calculated in KJ per mole from the
temperature changes measured for. The practical’s were the dissolving of
anhydrous sodium carbonate in water, the dissolving of ammonium chloride
in water, the neutralisation of hydrochloric acid with sodium hydroxide and
the combustion of an alcohol.
Risk assessment:
Hazard What could go People Safety In case of Risk (high,
wrong at risk precautions accident medium, low)
Bags/coats For the bags Anyone The control If someone Medium
and coats this who measure to trips over,
can be slips reduce the make sure
dangerous if over risk of bags no one else
left on the bags. and coats is is injured
chair because to place and obtain
the students them all to medical
may move the sides of attention
through the the tables. when
bags in the necessary.
classroom and
that can result
in the solution
to be poured
onto their eyes
, and hands.
Chairs For the chairs Anyone The control If someone Medium
this can be that sits measure to gets hit by
dangerous in a reduce the the chair,
because the chair. risk of chairs make sure
solution can is to place all they are not
spill while the chairs under injured and
students sitting the table and obtain
down and make sure medical
therefore, they you are attention if
won’t be able standing up needed.
to move quick thought out
in order to the
avoid it. experiment.
Glassware For the Anyone Safety steps If glass Medium
glassware this that to minimise smashed
can be does not that risk of clear the
dangerous wear the glass is to area and
because it can their lab treat it clean up all
be smashed coat. properly and fragment
and therefore, Anyone slowly. and pieces
this can put the that is in of glass.
students at a direct
risk of getting contact
injured from with
the broken broken
glass. glass.
The solution can cause sever Anyone The safety If the Low
eye damage that steps to solution
and skin burn. does not minimise the gets into
take danger by the eyes,
care the solution make sure
while are to wear to wash
dealing protective your face
with the gloves this immediatel
solution can prevent y in the sink
the solution or seek
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