Blog

For the reaction SO2(g) + NO2(g)    SO3(g) + NO(g), the equilibrium constant is 18.0 at 1,200ºC. If 1.0 mole of SO2 and 2.0 moles of NO2 are placed in a 20. L container, what concentration of SO3 will be present at equilibrium?

How much energy (heat) is required to convert 52.0 g of ice at –10.0°C to steam at 100°C?  specific heat of ice: 2.09 J/g·°C   ΔHfus = 6.02 kJ/mol specific heat of water: 4.18 J/g·°C   ΔHvap = 40.7 kJ/mol specific heat of steam: 1.84 J/g·°C    

The half life for a first order reaction is 45 min. What is the rate constant in units of s-1?

Calculate the pH of a solution that is 0.410 M in HOCl and 0.050 M in NaOCl. [Ka(HOCl) = 3.2 × 10–8]

Calculate the molality of 6.0 M H2SO4 solution. The density of the solution is 1.34 g/mL.

The first-order decomposition, A → products, has a rate constant of 0.150 s–1. Starting with [A]o = 0.350 M, how much time is required for [A]t = 0.125 M?

Calculate the pH of 2.6 × 10–2 M KOH.

The half life for a first order reaction is 45 min. What is the rate constant in units of s-1?

Calculate the pH of a solution that is 0.410 M in HOCl and 0.050 M in NaOCl. [Ka(HOCl) = 3.2 × 10–8]

The geometry of the SF4 molecule is