sc15, dynamic equilibria, calculating volume gases (paper 1)

Question 1

what is a fertiliser

Answer 1

soluble substances added to the soil to promote the growth of plants

Question 2

what are the main different substances for plants to grow well

Answer 2

• nitrogen
• phosphorus
• potassium

Question 3

why are ammonium salts are useful as fertilisers

Answer 3

they are a source os soluble nitrogen

Question 4

what is the typical soluble compound nitrogen is found in

Answer 4

nitrate and ammonium salts

Question 5

what is the typical soluble compound phosphorus is found in

Answer 5

phosphate salts

Question 6

what is the haber process

Answer 6

a reversible reaction between nitrogen and hydrogen to form ammonia

Question 7

what is the typical soluble compound potassium is found in

Answer 7

potassium salts

Question 8

how does a tempurature increase effect equilibrium ability

Answer 8

• moves in direction of endothermic reaction
• rate increased

Question 9

how does a pressure increase effect equilibrium ability

Answer 9

• moved in direction of fewest molecules of gas
• rate increased if reacting gases present

Question 10

how does a concentration of a reacting substance increase effect equilibrium ability

Answer 10

• moves in direction away from reacting substance
• rate increased

Question 11

how does a catalyst added effect equilibrium ability

Answer 11

• no change
• rate increased