Calculation Points Flashcards

1
Q

Density equation

A

Density = mass/Vol

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2
Q

% yield

A

Actual yield/ theoretical yield X 100

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3
Q

Atom economy

A

Mass required products / total mass reactants X 100

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4
Q

What does high ATOM economy mean?

A

Nearly all or all the atoms of the reactants are in the desired product

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5
Q

Low atom economy?

A

Not many atoms in product

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6
Q

What is the atom economy if only one product produced?

A

100%

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7
Q

If there is a smaller mass or vol of a substance used in experiment what happens?

A

There’s a smaller volume obtained in a titre leading to a larger percentage error

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8
Q

Why is it necessary to recrystallise a product before weighing it?

A

It purifies them so impurities are removed and only desired product is left- gives an accurate mass of product

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9
Q

Why is water a soluble solvent for recrystallisation?

A

It’s soluble at high temps but insoluble at low temps

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10
Q

What is a double bond?

A

Unsaturated hydrocarbon

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11
Q

What is a single bond?

A

Saturated hydrocarbon

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12
Q

What does the m/z value in mass spec tell us?

A

The Mr

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13
Q

If there is a reaction involving carboxylic acid and identification of a structure- if the ratio is 1:1 what does this mean?

A

There will only be one carboxyl group

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14
Q

Conversion: Kg to grams

A

Times by 1000

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15
Q

Conversion: Kg to grams

A

Times by 1000

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