4. (a) what weight of glycine (pka1 = 2.4; pk2 = 9.6), and what volume of im hcl are required to make 100 ml. of 0.3m buffer, ph 2.4? (b) what weight of glycine and what volume of 1m naoh are required to make 100 ml of 0.3m buffer, ph 9.3? remember that glycine is sold as the zwitterion salt.

the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.

there are two significant figures.