Question

b) Conductivity of 0.10 M NaCl 1.131 ms Conductivity of 0.010 M NaCl 6.41 ms Conductivity of 0.010 M CaCl2m 2.07 msulo

i) approximately what molarity of NaCl does the conductivity of the sports drink corresponds to?

iii) Which ingredients from the list above are responsible for the electrical conductivity? Explain

Conductivity of 0.10 M NaCl : 1.131 mS

Conductivity of 0.010 M NaCl : 0.41 mS

Conductivity of 0.010 M CaCl2: 2.07 mS

Answer 1

iii) Which ingredients from the list above are responsible for the electrical conductivity? Explain

from the list of contents of a sports drink only three are electrolytes citric acid, sodium citrate, monopotassium phosphate , being an electrolyte these ionize in water and give ions like H⁺,K⁺ , Na⁺ which have good ionic mobility and are cause of conductivity of sports drink. Other constituents are non-electrolyte and have role in electrical conductivity.

i) approximately what molarity of NaCl does the conductivity of the sports drink corresponds to?

You have not provided data for conductivity , but for most of sports drinks it is ~ 0.60 mS, since conductivity and conc. have linear relationship , so molarity of NaCl does the conductivity of the sports drink corresponds to ~0.03 M .