An equilibrium mixture of pcl₅(g), pcl₃(g), and cl₂(g) has partial pressures of 217.0 torr, 13.2 torr, and 13.2 torr, respectively. a quantity of cl₂(g) is injected into the mixture, and the total pressure jumps to 263.0 torr. the appropriate chemical equation is pcl₃(g)+cl₂(g)↽−−⇀pcl₅(g) calculate the new partial pressures after equilibrium is reestablished.

PCl₅ = 223.4 torr

PCl₃ = 6.8 torr

Cl₂ = 26.4 torr

Explanation:

For gas substances, the equilibrium constant can be calcultaed based on the partial pressures (Kp). For a generic reaction:

aA(g) + bB(g) ⇄ cC(g) + dD(g)

, where pX is the partial pressure of X.

The reaction with the gas mixture given is:

PCl₅(g) ⇄ PCl₃(g) + Cl₂(g)

Kp = [(pPCl₃)*(pCl₂)]/(pPCl₅)

Kp = [13.2*13.2]/217

Kp = 0.803

When more Cl₂ is added, for Le Chatêlier's principle, the equilibrium will shift for the left, more PCl₅ will be formed, and the equilibrium will be reestablished.

The initial total pressure was 243.4 torr, so if it jumps to 263.0 torr, it was added 19.6 torr of Cl₂, so the partial pressure of Cl₂ is 32.8 torr. For the reaction:

PCl₅(g) ⇄ PCl₃(g) + Cl₂(g)

217.0         13.2        32.8      Initial

+x               -x            -x         Reacts (stoichiometry is 1:1:1)

217 + x       13.2-x     32.8-x  Equilibrium

So, the equilibrium constant must be:

0.803 = (432.96 - 46x + x²)/(217 + x)

432.96 - 46x + x² = 174.251 + 0.803x

x² - 46.803x + 258.71 = 0

By Bhaskara's equation:

Δ = (46.803)² - 4*1*258.71

Δ = 1,155.68

x =[-(- 46.803) ±√1,155.68]/2

x' = (46.803 + 33.99)/2

x' = 40.40

x'' = (46.803 - 33.99)/2

x'' = 6.40

x < 32.8, so x = 6.40

The new partial pressures are:

PCl₅ = 217.0 + 6.40 = 223.4 torr

PCl₃ = 13.2 - 6.40 = 6.8 torr

Cl₂ = 32.8 - 6.40 = 26.4 torr

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.