Question

For the reaction A(aq) + BB(1) - C(s) + (aq) the equilibrium constant, K, can be written as PoD K- A When calculating the equilibrium constant, aqueous solutes must be expressed in moles per liter (M), and gases must be expressed in pressure as bars. This is because they are dimensionless ratios of the actual concentration or pressure divided by standard state concentration, which is M for solutions and 1 bar for gases. these are the only units of concentration and pressure that are independent of temperature. the dimensionless ratios are always unity (1) because the concentration of the solute or pressure of the gas are divided by standard state concentrations. there are no other ways to express pressure or concentration other than bars or moles per liter (M). Pure solids and pure liquids are omitted from the equilibrium constant expression because about us Careers Cy c le

Answer 1

An equilibrium constant is always unitless. Yo rende that each component is divided by unit of its standard state which is bar for gases and molar for liquids. Hence, option (3) is correct for solids and gases, it is defined to be in their standard states, which is im and I bar respectively...Hence option (4) is correct. Hope it helps you.