Caffeine (c_8h_10n_4o_2) is a weak base with a k_b value of 4 times 10^-4. the ph of a 0.01 m solution of caffeine is in the range of: a. 2-3 b. 5-6 c. 7-8 d. 9-10 e. 11-12

The pH of the solution lies from 11 to 12.Hence, option e is correct.

Explanation:

The value of for caffine =

Initial

   0           0.01 M       0

AT equilibrium:

  x          (0.01 -x)M      x

Solving for x:

x = 0.0096 M

The pOH of the solution is given by :

pOH = 2.02

pH= 14 - pOH = 14 - 2.02 = 11.98

The pH of the solution lies from 11 to 12.

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".