Question

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q is equilibrium constant as determined by the law of mass action. for q, concentration units of mol/l are used.
q is called the reaction quotient. q has the exact same form as k or k_p, but instead of equilibrium concentrations, initial concentrations are used to calculate the q value.
k_p is equilibrium constant as determined by the law of mass action. for k_p, partial pressures in units of atm are used (generally).
k_p is equilibrium constant as determined by the law of mass action. for k_p, concentration units of mol/l are used.
q is equilibrium constant as determined by the law of mass action. for q, partial pressures in units of atm are used (generally).
k is equilibrium constant as determined by the law of mass action. for k, partial pressures in units of atm are used (generally).
k_p is called the reaction quotient. k_p has the exact same form as k or q, but instead of equilibrium concentrations, initial concentrations are used to calculate the k_p value.
k is equilibrium constant as determined by the law of mass action. for k, concentration units of mol/l are used.
k is called the reaction quotient. k has the exact same form as q or k_p, but instead of equilibrium concentrations, initial concentrations are used to calculate the k value.

Explanation:

• For \(Q\) (reaction quotient):
• \(Q\) is calculated using initial concentrations (when concentration units of \(mol/L\) are used) or initial partial pressures (when partial pressures in units of \(atm\) are used). It has the same form as \(K\) (equilibrium constant).
• For \(K_{p}\) (equilibrium constant in terms of partial pressures):
• \(K_{p}\) is determined by the law of mass - action. Partial pressures in units of \(atm\) are used (generally).
• For \(K_{c}\) (equilibrium constant in terms of concentrations):
• \(K_{c}\) is determined by the law of mass - action. Concentration units of \(mol/L\) are used.

Answer:

• \(Q\) is equilibrium constant as determined by the law of mass action. For \(Q\), concentration units of \(mol/L\) are used.
• \(Q\) is called the reaction quotient. \(Q\) has the exact same form as \(K\) or \(K_{p}\), but instead of equilibrium concentrations, initial concentrations are used to calculate the \(Q\) value.
• \(K_{p}\) is equilibrium constant as determined by the law of mass action. For \(K_{p}\), partial pressures in units of \(atm\) are used (generally).
• \(K_{c}\) is equilibrium constant as determined by the law of mass action. For \(K_{c}\), concentration units of \(mol/L\) are used.