The pH and electrical conductivity of four different mixtures were measured: Mixtures Conductivity (Ma) PH a) 0.1 mol L-1 HCl 260 1 b) 0.1 mol L-1 CH3OOH 5  3 c) Mixture made by mixing equal valumes of 0.2 mol L-1 HCl and 0.2 mol L-1 NaCl  340 1 d) Mixture made by mixing equal volumes of              0.2 mol L-1 HCl and 0.2 mol L-1 NaCH3COO 80 3       a) Explain why the conductivity of mixture A is higher than that of mixture B, yet the pH of A is lower than the pH of B. Include relevant equations in your answer. b) Explain why the pH of mixture C is the same as the pH of mixture A. c) Why is the conductivity of mixture C larger than the conductivity of mixture A? d) Why is the pH of mixture D the same as the pH of mixture B? Part B –  Determine the final pH for the following two solutions a) Solution A after mixing 500mL 0.2M HCl and 300 mL 0.6M HCl b) Solution B after mixing 400mL 0.3M HCl and 200mL 0.8M NaOH

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The pH and electrical conductivity of four different mixtures were measured:

Mixtures Conductivity (Ma) PH
a) 0.1 mol L-1 HCl 260 1
b) 0.1 mol L-1 CH3OOH 3
c) Mixture made by mixing equal valumes of 0.2 mol L-1 HCl and 0.2 mol L-1 NaCl  340 1
d) Mixture made by mixing equal volumes of              0.2 mol L-1 HCl and 0.2 mol L-1 NaCH3COO 80 3
     

a) Explain why the conductivity of mixture A is higher than that of mixture B, yet the pH of A is
lower than the pH of B. Include relevant equations in your answer.

b) Explain why the pH of mixture C is the same as the pH of mixture A.

c) Why is the conductivity of mixture C larger than the conductivity of mixture A?

d) Why is the pH of mixture D the same as the pH of mixture B?


Part B – 
Determine the final pH for the following two solutions

a) Solution A after mixing 500mL 0.2M HCl and 300 mL 0.6M HCl
b) Solution B after mixing 400mL 0.3M HCl and 200mL 0.8M NaOH

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d) Why is the pH of mixture D the same as the pH of mixture B?

 

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Part B –  follow on from the above question?


Determine the final pH for the following two solutions

a) Solution A after mixing 500mL 0.2M HCl and 300 mL 0.6M HCl
b) Solution B after mixing 400mL 0.3M HCl and 200mL 0.8M NaOH

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