Determine the Acid Concentration of a Household Acid. - Coggle Diagram
Determine the Acid Concentration of a Household Acid.
What is an acid?
A molecule that is a proton donor.
What are the types of acids?
Must contain hydrogen
A proton donor
Electron pair reciever
Molecule does not require a hydrogen atom
What are common household acids?
Will not use in experiment, as the liquid is too viscous to dilute correctly.
Could use in experiment, as it is abundant and wont spoil if unrefridgerated.
Unlikely to use, as it is difficult to juice an apple
Unlikely to use, as the milk will need to be refrigerated for several hours before the experiment.
The electrolyte is the acid
Will not use, as it is too difficult to safely remove the electrolyte
Highly water soluble due to polarity from functional groups
One hydroxyl group
3 carboxyl groups
Citric acid is stronger than malic acid, as there are more carboxyl groups
carboxylic acid group
HIghly water soluble due to polarity from functional groups
One hydroxy group
two carboxylic groups
Hydroxyl groups also participates in hydrogen bonding
Carbonyl is a hydrogen bond acceptor and donor
Method & Materials
The concentration of the standard solution
Used for stronger acidic solutions and is effective betweeen pH 3.1 - 4.4
Red at pHs roughly 2 and below, yellow at PHs 4 and above. Orange between 3.1 & 4.4
Effective for solutions between pH 8.3 - 10.0
Commonly used for carbonic acid/carbon dioxide presence in a liquids
Normally used for substances that have a pH near 7 (weak acids)
Yellow at pH 6 and below, changes to blue at roughly pH 7.6 and above. Goes green between pH 6.6 and 7. In titration prac, aiming for green as you will get closer to neutral
Effecive range between pHs 6.0 and 7.6
Will use as it has the lowest range of pHs that the desired pH lies within
Effective for all pH ranges
Effective between pHs 6.4 - 8.0
Yellow at pH 6.4 and below, deep pink at pH 8 and above. Lighter, almost creamy pink between pH 6.4 and 8
Due to it being a weak base, getting a more accurate pH will be easier.
1x 100ml volumetric flask
1x ceramic tile
1x volumetric pipette filler
1x 200mL beaker
1x 20ml volumetric pipette
1x conical flask
1x clamp stand
Their ionic bond means when dissolved in an aqueous solution, the two oppositly charged atoms break the bond and become free-floating ions. The negatively charged ions are proton acceptors.
weak as the nitrogen atom has a free electon pair that readily accepts a proton (H+ ion).
when dissolved in water, ammonia aquires hydrogen ions from the water.