Plug the values for the second weight into the formula to find the spring constant: [11] The formula to find the spring constant is. k = F x {\displaystyle k= {\frac {F} {x}}} . Here, the force is. 0.1 N {\displaystyle 0.1N} and the distance the spring stretches when that force is added is. 0.035 m {\displaystyle 0.035m}
At equilibrium, the value of the equilibrium constant is equal to the value of the reaction quotient. At equilibrium, K c = Q c = [ N 2 O 4] [ NO 2] 2 = 0.042 0.016 2 = 1.6 × 10 2. The equilibrium constant is 1.6 × 10 2. Note that dimensional analysis would suggest the unit for this value should be M−1. Example Equilibrium Constant Calculation. For the equilibrium between copper and silver ions: Cu (s) + 2Ag + ⇆ Cu 2+ (aq) + 2Ag (s) The equilibrium constant expression is written as: Kc = [Cu 2+] / [Ag +] 2. Note the solid copper and silver were omitted from the expression. Also, note the coefficient for the silver ion becomes an exponent in eP0JZDr. 393 156 144 324 237 325 35 272 35