The concentration of hydrogen ion in a sample of soft drink is `3.8 xx 10^(-3)` M. What is its pH and nature of the soft drink.

The concentration of hydronium ions in a cup of black coffee is 1.3 xx 10^(-5) M. Find the pH of the coffee. Is this coffee acidic or alkaline?

The rate of the reaction A rarr products, at the initial concentration of 3.24 xx 10^(-2)M is nine times its rate at another initial concentration of 1.2 xx 10^(-3)M . The order of reaction is

The radius of innermost electron orbit of a hydrogen atom is 5.3xx10^(-11)m . What is the radius of orbit in the second excited state?

The rate constant of a certain first order reaction is 3.12xx10^(-3) min^(-1) What is the molarity of the reactant after 1.5 hours , If initial concentration is 0.045 M ?

The pH of 3xx10^(-4) M KOH is

The radius of the innermost orbit of a hydrogen atom is 5.3xx10^-11m . What are the radii of the n=2 and n=3 orbits?

The dissociation constant of a weak monobasic acid is 3.5 xx 10^(-8) . Calculate its degree of dissociation in 0.05 M solution.

A sample of pure PCI_5 was introduced into an evacuated vessel at 473 K.After equilibrium was attained,concentration of PCI_5 was found to be 0.5 xx 10 ^(-1) mol L^(-1) . If value of K_c is 8.0 xx 10^(-3) ,f what are the concentrations of PCI_3 and CI_2 at equilibrium? PCI_5(g) hArr PCI _3(g) +CI_2(g) .

A sample of pure PCI_5 was introduced into an evacuated vessel at 473 K.After equilibrium was attained,concentration of PCI_5 was found to be 0.5 xx 10 ^(-1) mol L^(-1) . If value of K_c is 8.0 xx 10^(-3) ,f what are the concentrations of PCI_3 and CI_2 at equilibrium? PCI_5(g) hArr PCI _3(g) +CI_2(g) .

A 60 watt filament lamp loses all its energy by radiation from its surface. The emissivity of the surface is 0.5. The area of the surface is 5 xx 10^-5m^3 . Find the temperature of the filament ( sigma = 5.67 xx 10^-8m^2s^-4K^-4 )