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“How could you determine the concentration of a specific molecule, ion or…
“How could you determine the concentration of a specific molecule, ion or active ingredient in a household item?
independent variable
The type of household
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towel
pure cotton, blended and other materials.
battery
lithium, graphite, cobalt, and manganese.
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how to measure ?
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ascorbic acid
use a redox titration.
The redox reaction is better than an acid-base titration since there are additional acids in a juice,
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safety issues
Sodium Carbonate
if we set the Sodium Carbonate as the the specific ingredient that will be measured, the safety concern will be
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Flouride
if we set the Flouride as the the specific ingredient that will be measured, the safety concern will be
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Sodium Bicarbonate
if we set the Sodium Bicarbonate as the the specific ingredient that will be measured, the safety concern will be
expose in sodium bicarbonate environment may cause coughing and sneezing if a high concentration of dust has been inhaled
Take precautions, keep a distance from reactants, and leave immediately if you feel unwell. Call an ambulance in an emergency.
expose in sodium bicarbonate environment may cause mild irritation, such as redness and slight pain, may result from eye contact.
Take precautions, keep a distance from reactants, and leave immediately if you feel unwell. Call an ambulance in an emergency.
sodium bicarbonate environment may cause Gastrointestinal irritation(if large amounts have been ingested).
Take precautions, keep a distance from reactants, and leave immediately if you feel unwell. Call an ambulance in an emergency.
Sodium Hypochlorite
if we set the Sodium Hypochlorite as the the specific ingredient that will be measured, the safety concern will be
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Hydrogen Peroxide
if we set the Hydrogen Peroxide as the the specific ingredient that will be measured, the safety concern will be
expose in hydrogen peroxide environment may cause irritation to the eyes, nose, skin
Take precautions, keep a distance from reactants, and leave immediately if you feel unwell. Call an ambulance in an emergency.
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ascorbic [acid]
if we set the ascorbic acid as the the specific ingredient that will be measured, the safety concern will be
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sodium fluoride
if we set the sodium fluoride as the the specific ingredient that will be measured, the safety concern will be
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magnesium hydroxide
if we set the magnesium hydroxide as the the specific ingredient that will be measured, the safety concern will be
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ethanol
if we set the ethanol as the the specific ingredient that will be measured, the safety concern will be
Expose in ethanol environment may cause toxic by oral, dermal, or inhalation
Take precautions, keep a distance from reactants, and leave immediately if you feel unwell. Call an ambulance in an emergency.
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Expose in ethanol environment may cause irritation of the eyes, skin and respiratory tract
Take precautions, keep a distance from reactants, and leave immediately if you feel unwell. Call an ambulance in an emergency.
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limitation
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some substance's boiling point is same with the produce we need (such as have the similar boiling point with isopropyl ) , the data may not accurate