C5

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What is the equation for finding Moles?
Moles = Mass / Mr
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What is the equation for Concentration?
Concentration = Moles / Volume
2 of 9
What Are three methods of measuring Gas? Give their advantages/disadvantages
GAS SYRINGE - Accurate but vigorous reactions could blow it out. UPTURNED MEASURING CYLINDER - good for ammonia and hydrogen chloride, burette is very accurate. MASS - most accurate using mass but disadvantage of releasing gas into the room
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Describe how three different factors affect equilibrium
TEMPERATURE - Increase temperature moves to endothermic to counteract. PRESSURE - Increase temperature moves towards fewer moles. CONCENTRATION - increase concentration equilibrium moves to the right
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Symbol equations for three reactions in the contact process
diagram here
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Explain the conditions used in the contact process
TEMPERATURE of 450' - compromise between high yield and speed. PRESSURE atmospheric pressure - compromise between yield and price. CATALYST - a vanadium pentoxide catalyst is used and doesnt change equilbrium
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What is the difference between strength and acidity?
STRENGTH (PH) tells you what proportion of acid molecules ionise in water. CONCENTRATION is how many moles of acid in 1 litre of water.
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What does it mean for acid to totally ionise in water?
It means that every hydrogen atom releases a hyrdrogen ion, giving lots of H+ ions.
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How would you test for Chloride, Bromide and Iodide?
Add dilute sulfuric acid followed by lead nitrate, then observe colors. chloride gives WHITE. bromide gives CREAM. Iodide gives YELLOW
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Other cards in this set

Card 2

Front

What is the equation for Concentration?

Back

Concentration = Moles / Volume

Card 3

Front

What Are three methods of measuring Gas? Give their advantages/disadvantages

Back

Preview of the front of card 3

Card 4

Front

Describe how three different factors affect equilibrium

Back

Preview of the front of card 4

Card 5

Front

Symbol equations for three reactions in the contact process

Back

Preview of the front of card 5
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