Fertilisers + Haber process - SC15

Question 1

What do fertlizers replace for growth?

Answer 1

mineral ions

Question 2

What elements do fertilizers provide as soluble compounds? and why?

Answer 2

nitrogen, phosporous + potassium - because root hair cells only absorb mineral ions dissolved in water

Question 3

What are nitrogenous fertilizers (amonium nitrate/sulfate) a source of?

Answer 3

solube nitrogen compund

Question 4

What is the equation for amonium nitrate?

Answer 4

NH3 + HMO3 –> NH4NO3

Question 5

What is the equation for amonium nitrate?

Answer 5

2NH2 + H2SO4 –> (NH4)2SO4

Question 6

How is amonium nitrate manifactured?

Answer 6

reacting amonia solution with dilute nitric acid in the Haber process (nitrogen + hydrogen react in a reversible reaction)

Question 7

How is amonium sulfate manifactured?

Answer 7

reacting amonium solution with nitric acid on a industrial, continous process using raw materials

Question 8

what is the haber process? (in 2 steps)

Answer 8

1. an industrial process used to form ammonia from hydrogen and nitrogen
2. then reacting amonium again with nitric acid to form amonium nitrate

Question 9

what is the word equation for the harber process (2nd step)?

Answer 9

amonia + nitric acid <=> amonium nitrate

Question 10

what’s the symbol equation for harber process (2nd step)?

Answer 10

NH3 + HNO3 <=> NH4NO3

Question 11

What is the symbol for nitric acid

Answer 11

HNO3

Question 12

what is the symbol for ammonia?

Answer 12

NH3

Question 13

what is the balanced symbol equation for nitrogen + hydrogen in a reversible reaction to make ammonia?

Answer 13

N(2) + 3H(2) <=> 2NH(3)

Question 14

What is the purpose of an iron catalyst in the harber process?

Answer 14

speeds up reaction

Question 15

Explain how position of dynamic equilibrium changes if the temperature is decreased dring harber process (step 1)

Answer 15

Dynamic EQ moves in the exothermic direction, equilbrium moves to the right