Assignment 2A: Concentrate on keeping up your standards
RISKS AND HEALTH & SAFETY MEASURES DURING THE EXPERIMENTS:
I utilised Anhydrous Sodium Carbonate powder, that is mildly
poisonous, and it can present many dangers when handled carelessly
or inhaled, to prepare the standard solution. I therefore ensured that
I wore a gloves and mask to shield my face and skin from its
damaging effects, such as itchiness and coughing. In addition, I made
sure to wear my lab coat and safety glasses for the protection of my
eyes. I handled each piece of equipment carefully to prevent any
injury because I was using beakers and flasks, which may break if any
of the equipment was used improperly. I moved the solutions with
caution to prevent any chemical spillage in the lab. The Hydrochloric
Acid that is necessary for the titration is dangerous for the skin, so I
used it carefully to prevent splashing it anyplace on the shelf or on
my skin. To prevent significant cuts and injuries, I handled the
delicate equipment used during the experiment carefully, such as
pipettes, test tubes, and other items that might quickly break if
formidable force is applied to them. In addition, there were electrical
hazards because I used certain electrical equipment during the
experiment. I did not put any liquid or chemicals close to the
electrical equipment out of precaution, and water was not put
anywhere near the switch boards. Thus, everybody was shielded
from potentially harmful electrical risks.
EVALUATION OF TECHNIQUES AND FUTURE IMPROVEMENTS:
When making the Standard Solution, I was careful to weigh
Anhydrous Sodium Carbonate precisely between 1.25 and 1.45
grams, calibrating the weighting scale a few times before each
measurement. To obtain accurate outcomes, I carefully added
, 150cm^3 of distilled water when I placed the powder into the
beaker. To get them to blend well, I stirred the beaker constantly. To
ensure that no powder was left behind, I made care to carefully clean
the weighing boat and funnel with distilled water. I made sure keep
the volumetric flask's mark at eye level when I transferred the
mixture into it so that I could precisely measure out the 250 cm^3 of
solution. For a few minutes, I gently stirred the flask to obtain the
ideal mixture.
The fact that the tested concentration was 0.0504mol/dm3 during
the titration of sodium hydroxide while the actual concentration was
0.1 mol/dm3 indicates that there were minimal mistakes committed
during the task. There was a percentage variation of (0.1-0.0504)/0.1
x 100 = 49.6% between the real concentration and my
concentration, indicating that my results were not entirely accurate.
However, I did a Rough Titration first to get an understanding of how
to be more exact with my readings and to ensure appropriate
technique. I made sure to remove every air bubble from the
burette's tip as I filled it to reduce the possibility of mistakes. It was a
little challenging to fill the pipette with Sodium Carbonate Solution
since Air bubbles were building up within the pipette, but I made
sure to get exactly 25 cm3 of solution. I held the pipette mark at eye
level so I could see the meniscus's bottom meet the mark. Other
than that, I took care to use appropriate technique by taking the
funnel out of the burette before doing titration. I repeated the
titration three to four times to increase the accuracy of the result,
but there are several human factors and technical limitations that
can affect the outcome, such as inaccurate measuring, unclean or
unwashed equipment, etc. If I could have been more precise in
reading the volume and operating the equipment appropriately, the
errors made during titration would be eliminated. Since using the
equipment wrong can lead to problems in the experiment, I believe
filling the pipette needs some practise. In addition, I should have
RISKS AND HEALTH & SAFETY MEASURES DURING THE EXPERIMENTS:
I utilised Anhydrous Sodium Carbonate powder, that is mildly
poisonous, and it can present many dangers when handled carelessly
or inhaled, to prepare the standard solution. I therefore ensured that
I wore a gloves and mask to shield my face and skin from its
damaging effects, such as itchiness and coughing. In addition, I made
sure to wear my lab coat and safety glasses for the protection of my
eyes. I handled each piece of equipment carefully to prevent any
injury because I was using beakers and flasks, which may break if any
of the equipment was used improperly. I moved the solutions with
caution to prevent any chemical spillage in the lab. The Hydrochloric
Acid that is necessary for the titration is dangerous for the skin, so I
used it carefully to prevent splashing it anyplace on the shelf or on
my skin. To prevent significant cuts and injuries, I handled the
delicate equipment used during the experiment carefully, such as
pipettes, test tubes, and other items that might quickly break if
formidable force is applied to them. In addition, there were electrical
hazards because I used certain electrical equipment during the
experiment. I did not put any liquid or chemicals close to the
electrical equipment out of precaution, and water was not put
anywhere near the switch boards. Thus, everybody was shielded
from potentially harmful electrical risks.
EVALUATION OF TECHNIQUES AND FUTURE IMPROVEMENTS:
When making the Standard Solution, I was careful to weigh
Anhydrous Sodium Carbonate precisely between 1.25 and 1.45
grams, calibrating the weighting scale a few times before each
measurement. To obtain accurate outcomes, I carefully added
, 150cm^3 of distilled water when I placed the powder into the
beaker. To get them to blend well, I stirred the beaker constantly. To
ensure that no powder was left behind, I made care to carefully clean
the weighing boat and funnel with distilled water. I made sure keep
the volumetric flask's mark at eye level when I transferred the
mixture into it so that I could precisely measure out the 250 cm^3 of
solution. For a few minutes, I gently stirred the flask to obtain the
ideal mixture.
The fact that the tested concentration was 0.0504mol/dm3 during
the titration of sodium hydroxide while the actual concentration was
0.1 mol/dm3 indicates that there were minimal mistakes committed
during the task. There was a percentage variation of (0.1-0.0504)/0.1
x 100 = 49.6% between the real concentration and my
concentration, indicating that my results were not entirely accurate.
However, I did a Rough Titration first to get an understanding of how
to be more exact with my readings and to ensure appropriate
technique. I made sure to remove every air bubble from the
burette's tip as I filled it to reduce the possibility of mistakes. It was a
little challenging to fill the pipette with Sodium Carbonate Solution
since Air bubbles were building up within the pipette, but I made
sure to get exactly 25 cm3 of solution. I held the pipette mark at eye
level so I could see the meniscus's bottom meet the mark. Other
than that, I took care to use appropriate technique by taking the
funnel out of the burette before doing titration. I repeated the
titration three to four times to increase the accuracy of the result,
but there are several human factors and technical limitations that
can affect the outcome, such as inaccurate measuring, unclean or
unwashed equipment, etc. If I could have been more precise in
reading the volume and operating the equipment appropriately, the
errors made during titration would be eliminated. Since using the
equipment wrong can lead to problems in the experiment, I believe
filling the pipette needs some practise. In addition, I should have
