# Tag Info

Accepted

### Is "Sulfuric acid... makes a poor electrolyte... very little of it will dissociate into ions" really true? What does that actually mean?

The best known conducting aqueous solutions are that of strong acids in water because the hydronium ion (=protonated water) has the highest electrical conductivity known today. The infinite dilution ...
• 33k
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### Why does the graph of the electrical conductivity of sulfuric acid/water solutions have this knee in the ~85%-~92% range?

The comment by Vikki made me dig even older papers. Since conductance (not conducitivity note that Darling is using an incorrect terminology from today's standards) is inversely related to viscosity, ...
• 33k
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### Why are ionic compounds bad conductors of electricity in solid state?

Electric charge is transferred by physically moving charged particles around. In the case of an electric current moving through a wire (for example), the electrons are moving. In an ionic compound, ...
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### Is "Sulfuric acid... makes a poor electrolyte... very little of it will dissociate into ions" really true? What does that actually mean?

The conductivity might be viewed relative to other electrolytes and by concentration. By concentration: Up to about 25% $\ce{H2SO4:H2O}$, conductivity increases fairly linearly with concentration, ...
• 24.4k
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### Conductivity as a function of acid concentration

At low concentration, conductivity is proportional to concentration (a linear relationship). Each ion will have its own unique mobility, as discovered by Kohlrausch. $\ce{H+}$ has the highest ...
• 39k

### Why is copper a better conductor than iron?

This is, ultimately, a question on solid state physics rather than chemistry. Further, the OP indicates that they are in high school, which kind of limits the depth of the answer that might be useful ...
• 7,670
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### What is the difference between molar conductance and molar conductivity?

I can understand your frustration. The use of terminology is often inconsistent and confused (much to my chagrin). I think you've got the general idea, the conductance ($G$) can be defined as follows: ...
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### Graphene Vs Copper?

The trick with graphene is that a lot of its amazing properties only work when you have continuous perfect sheets of it, and making graphene like this is currently beyond us, for large scales anyways. ...
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### Does an electrically conductive gas exist at room conditions?

It depends on what you are prepared to consider a gas and what you are prepared to consider room conditions. The gas inside all discharge lamps (fluorescent lamps and neon lamps in shop signs, for ...
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### Does an electrically conductive gas exist at room conditions?

Air at STP does conduct a tiny bit due to ionization by cosmic rays; this might even provide a path for lightning leaders. "Alex V. Gurevich of the Lebedev Physical Institute [et al] suggest that... ...
• 24.4k
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### Why does Ga improve conductivity of Ge?

This questions has two parts if you look closely: Which of the following elements is important in the semiconductor industry to improve the conductivity of Ge? All of the above will improve the ...
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### Why is AC current used rather than DC current for calculating the conductance of a solution(see body)?

When a current is passed through an electrolyte, a chemical reaction takes place. This alters the composition of the solution over time and you won't actually be measuring the conductivity(or ...

### Decrease in temperature of an aqueous salt solution decreases conductivity

Decrease in temperature has two effects, both attributing to lower electrolytic conductivity: decreases the mobility of the charge carriers (e.g. $\ce{H3O+}$ and $\ce{OH-}$ for pure water); ...
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### Decrease in temperature of an aqueous salt solution decreases conductivity

According to the Stokes-Einstein-Debye theory, and assuming the ionic composition remains constant (say for a fully dissociated salt), the main factor accounting for the response of the conductivity ...
• 18.9k
The answer is quite simple, if you look at the equation carefully. Conductance and conductivity are related by cell constant, $\displaystyle\frac{\text{Area}}{\text{Distance}},$ where the area is the ...
Expressed in $\pu{\Omega ^{-1} cm^2 mol^{-1}}$, the ionic conductance of usual ions like $\ce{Na+, K+, Ca^{2+}, Cl-, SO4^{2-}}$ are between $50$ and $80$. But the two ions $\ce{H+}$ and $\ce{OH-}$ ...