6 votes
Accepted

Could an airborne swarm of small insects explode?

A single insect can explode -- no swarm necessary. The bombardier beetle can do this multiple times sans rapid unscheduled disassembly (RUD); it emits a controlled "explosion" to deter ...
DrMoishe Pippik's user avatar
5 votes

Heating a Single Water Molecule

As the phase state is macroscopic phenomena, it does not make much sense to talk about a state of a single molecule. If you must, that consider it being in the gaseous state. Speaking of heating of a ...
Poutnik's user avatar
  • 41.5k
2 votes

Pressure in Clapeyron and clausius Clapeyron equation

For a single component system, p is the equilibrium vapor pressure and the pressure within the liquid. For a system with more than one component, if the gas phase is ideal and the Poynting correction ...
Chet Miller's user avatar
  • 13.3k
2 votes

How can a "reversible" reaction occur both ways?

[OP] Take a general reaction A⟶B with ΔG<0, it must be the case that B⟶A has ΔG>0 (or vice versa.) If you start with pure A, you'll make some B. If you start with pure B, you'll make some A. $\...
Karsten's user avatar
  • 40.2k
2 votes

Finding the molar ratio at equilibrium

Let: A = $\ce{SO2}$ B = $\ce{O2}$ C = $\ce{SO3}$ The only information given is the change in moles for the reaction and the volume decrease factor: $$\Delta n=c-a-b=1-1-0.5=-0.5$$ $$\frac{V_2}{V_1}=0....
Sam202's user avatar
  • 1,431
1 vote

why is 1 calorie 4.186 joules?

To warm water up 1K, you need the energy equivalent of 4.18 Joules. One joule is defined equal to the energy used to accelerate a body with a mass of one kilogram using one newton of force over a ...
raptorlane's user avatar
1 vote

Calculation of Reaction Extent as a Function of Pressure and Temperature: Issue with Activity-Based Approach

Since you asked for general assistance and I have dealt with these type of calculations, I will give you some general points as the question evolved these last days: The expression for the activity ...
Metal Storm's user avatar
  • 3,191
1 vote
Accepted

What is change in gibbs free energy of a reaction actually telling us?

The $\Delta G$ you quote is the slope of the free energy vs extent of reaction. When the reaction comes to equilibrium, which we will assume it does at some extent of reaction, then the slope of free ...
porphyrin's user avatar
  • 30.5k
1 vote

Interpretation of a Phase Diagram

Liquids and solids have vapor pressure, even though well below their boiling point. For example, the vapor pressure of solid $\ce{CO2}$ is high enough that it sublimes, i.e., goes directly from solid ...
DrMoishe Pippik's user avatar
1 vote

Number of state variables in the general expression for a state function

You are right, there has to be a 3rd variable, and it is usually mass or particle number. Even for an ideal gas there are 3 independent variables in its thermal equation of state $pV=\tfrac{m}{M}RT$. ...
hyportnex's user avatar
  • 484

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