Question

When 0.1 mole of ammonia is dissolved in sufficient water?

Answer 1

Answer:

Secondary School Chemistry 13+7 pts

When 0.1 mole of ammonia is dissolved in sufficient water to make 1 litre of solution. the solution is found to have a hydroxide ion concentration of 1.34 × 103. the dissociation constant of ammonia is?

Report by Jethwaarjun9947 19.03.2018

Answers

Hussain810

Hussain810Ace

Reaction involved-

NH3 + H2O → NH4+ + OH-

Given-

NH4+ = OH- = 1.34×10-3 M

NH3 reacted = (0.1 -1.34 ×10-3) M

Condition at equilibrium-

= (0.1 -1.34 ×10-3) M

= 0.1 - 0.00134 M

= 0.09866 M

Kb

= [NH4+ ][OH- ]/[NH3 ]

= (1.34×10-3 )× 1.34×10-3)/0.09866

=1.8 × 10-5