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Results tagged with pressure
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user 61578
For questions about gas pressure, or the effect of pressure in general on chemical species, substances, or reactions.
2
votes
Accepted
Effect on mass when decreasing pressure in equilibrium reaction
When the volume is decreased in gaseous system, the pressure would increase. … It would be greater just after you increase the pressure by reducing the volume. …
- 42.1k
4
votes
Is is valid to compare reaction quotient to $K_p$ as well as $K_c$?
The reaction of interest is:
$$\ce{XY(s) <=> X(g) + Y(g)} \tag1$$
Thus, $K_p = P_\ce{X}\cdot P_\ce{Y} = 4.1$ since $P_\ce{XY} = 1$ in given condition because it is a solid. If we assume $\ce{X}$ and $ …
- 42.1k
5
votes
Pressure exerted by a particle of ideal gas
Applying that in equation $(2)$ gives:
$$F = \frac{2mv_y}{\Delta t} = \frac{2mv_y}{\frac{2\ell}{v_y}} = \frac{mv_y^2}{\ell} \tag3$$
The pressure ($P_i$) applied by this single particle on one plane … is $\frac{F}{A} = \frac{F}{\ell^2}$:
$$P_i = F = \frac{F}{\ell^2} = \frac{\frac{mv_y^2}{\ell}}{\ell^2} = \frac{mv_y^2}{\ell^3} \tag4$$
The total pressure on one wall:
$$P = \sum^N_1 P_i = \sum^N_1 \left …
- 42.1k
10
votes
Accepted
Can silicon dioxide melt at 20 °C?
According to the phase diagram, cristobalite form is in liquid form at temperature grater than $\pu{1750 K}$ in pressure range of $\pu{0.1-0.7 MPa}$. … The extrapolation of that boundary would show it would never cross $\pu{20 ^\circ C}$ point on $x$-axis without going to negative pressure. …
- 42.1k