Science Acids/Bases + Reaction Rates

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created 8 years ago by chemistry_goo
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1

reaction rate

amount reacted or produced/time

2

kinetic energy is important to reaction rates because...

needed to react because particles need to be moving to collide with each other

3

impact of temperature

increases kinetic energy, increases reaction speed

4

impact of concentration

increases

5

impact of particle size

increases - more surface area (smaller particles)

6

impact of catalyst

speeds up reaction without becoming part of it

7

what does pH measure?

hydrogen +1 ions

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what does [H+1] mean?

concentration of hydrogen ions

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less than 7 pH

acidic

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greater than 7 pH

basic

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more H +1 means.....pH

low

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less H +1 means.....pH

high

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what does an indicator do?

changes color when pH changes

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acids release...

H +1 ions in water

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properties of acids:

higher hydrogen ion concentration than pure water, sour, burn when touched, dissolve metals to form H2 gas

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strong acid...

releases all possible H +1 ions

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weak acid...

releases only some H +1 ions

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properties of bases:

feel slippery, lower hydrogen ion concentration than pure water, higher OH concentration, bitter taste, dissolves fats and oils, corrode when touched

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strong base...

releases all OH in water

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weak base...

releases only some OH

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what is neutralization?

reaction between acid and base - properties cancelled out - forms neutral product

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acid + base =

salt + water

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what kind of reaction is neutralization?

double replacement

24

acid + metal =

hydrogen gas + salt

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what kind of reaction is acid + metal?

single replacement