When 0.1 mole of ammonia is dissolved in sufficient water?
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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
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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
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