Titration Calculation Flashcards

1
Q

What are titrations used for?

A

To determine an unknown concentration of a solution

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2
Q

What is the unit for concentration?

A

Mol/Dm^3 or Mol/L

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3
Q

How is concentration like a ratio in how it’s measured versus actual substance concentrations

A

The concentration measurement is, if there were 1 dm^3 or liter of that substance, It would have X moles in that one decimeter/liter and it’d be proportionally the same as the actual substance amount and it’s concentration

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4
Q

What tools are used for measuring titration?

A

Conical flask, Burette, and pipettes (usually)

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5
Q

What are the usual pHs of the two substances being added together in titration

A

An acid and a base (Or alkali)

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6
Q

What is usually the formula for the equation of the reaction of two substances in titration?

A

Acid + Base = Salt + Water

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7
Q

Titre volume = ?

A

Start volume - End volume

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8
Q

What is concentration?

A

The amount of dissolved solute (added into solvent) per unit volume of solution (Usually dm^3 or liters)

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9
Q

What is a solution?

A

Solute dissolved in solvent (Usually something dissolved into water)

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10
Q

What is a first time titration that is likely to be an inaccurate result called?

A

Rough titration

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11
Q

What is more than one titration in 2 to 3 trials (w/ rough) and is usually more “accurate” than rough titrations

A

Accurate titrations

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12
Q

What are state symbols?

A

Symbols that tell what state of matter a substance is in (Ex. (s) for solid or (g) for gas)

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13
Q

What is one of the most important things to have in chemistry, labs, and chem tests?

A

A nice, clean looking table w/ data on it

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14
Q

How is a burette usually read in titration?

A

To the nearest half a scale, usually ending w/ 0.00 or 0.05 (Ex. 23.20 or 23.25 cm^3)

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15
Q

How do you actually look at a burette?

A

Crouch and line eyes with bottom of concave, or downward bent, water surface

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16
Q

What is meniscus?

A

A concave curve at the top of a substance in a titration device with a substance in it. It’s caused by surface tension and adhesion

17
Q

What is the requirement for all accurate titration values?

A

They all need to be precise and be close in value ( Needs to be within 0.10cm^3 within each other )

18
Q

The formula to find concentration

A

Moles/Volume (dm^3 or cm^3)

19
Q

The formula to find moles

A

M = concentration/volume (M = Mass/ molecular mass..?)

20
Q

What type of analysis is a Titration lab/experiment?

A

Quantitative analysis

21
Q

How do you find the average titre?

A

Add up all of the Titre volumes and divide them by the number of trials done (Titre volume/# of trials)

22
Q

Converting volume from Cm^3 to Dm^3?

A

Divide the value by 1000 (Ex. 25.0/1000 = 0.0025)

23
Q

M = Mr x Mol could also be what?

A

M = Mr x (Concentration x Volume)