Electrolytes CHEM 121 Revised Sum 2015 3 Place 20mL of o.2M NH,OH in your 100mL

Question

Electrolytes CHEM 121 Revised Sum 2015 3 Place 20mL of o.2M NH,OH in your 100mL beaker. Place 20 mL of 0.1IM CH,COOH in your 150mL beaker. a) Test the conductance of 20 mL of 0.2M NHOH. WeaK b) Test the conductance of20mL of 0. 1 M CH,COOH. /eak c) Now mix these two solutions together and check the conductance of the mixture d) Why is the conductance different? EXPLAIN (in a short paragraph) what happened after considering the equation CH3COOH NH,OH acetic acid water ammonium acetate ammonium hydroxide

Explanation / Answer

2 A ) weak.

b ) weak.

c) strong.

d ) conductance is different because of two different molar concentrations of a solutions are used.

the acetic acid reacts with the ammonium hydroxide

the Ammonia gas dissolves in water to form ammonium hydroxide, a base. Ammonium hydroxide then reacts with acetic acid to form ammonium acetate and water. The salt ammonium ethanoate is produced, which is in the form of a colourless solution.

Because acetic acid is a weak acid, it will not fully dissociate. That means that the solution will reach an equilibrium between the reactants and products.we need to prefer concentrated acetic acid

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