Unit 4 and Unit 5 Flashcards

1
Q

What elements are not the precipitate

A

Na, K, NH4, NO3

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2
Q

What is determines the rate of a reaction

A

the frequency of collisions in molecules

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3
Q

what effects the rate of reactions (4 things)

A

Physical distribution
Concentration of the reactants
Temperature of Reaction
Catalyst

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4
Q

How to find the Activation Energy on a potential energy vs pathway graph

A

The E of A is from the reactant line to the top of the transition site

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5
Q

How to find the change in heat on a potential energy vs pathway graph

A

The change in heat is the energy of the products minus the energy of the reactants

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6
Q

What determines speed of a reaction based on a Eof A graph

A

The steepness of the peak, higher peak is a slower speed of reaction

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7
Q

When does K in rate law change

A

When temperature changes

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8
Q

What is a catalyst

A

Catalysts lower the activation energy and are used then reproduced

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9
Q

if 02 and n2 were compared in a gas state which would condense first and why

A

O2 becuase there are more elctrons therefore a stronger IMF of london dispersian forces so a higher polarizability causing o2 to condense first.

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10
Q

if concentration of A of a graph of concentration of reactant over time is linear what is the order

A

0 order

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11
Q

if concentration of natural log of A of a graph of concentration of reactant over time is linear what is the order

A

1 order

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12
Q

if concentration of 1/A of a graph of concentration of reactant over time is linear what is the order

A

2 order

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