22. Given the reactant amounts specified in each chemical equation, determine the limiting reactant in each case: a. HCI NaOH — NaCl + H,0 2.0 mol 2 5 mol 2UICI ZnCl, + H, 2.5 mol 6.0 mol C. 2Fe(OH), + 3H.,SO Fe,(S0,), + 6H,0 4.0 mol 6.5 mol (Hint: See Sample Problem F.)

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.

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l