In each of two flasks a solution is prepared by placing 0.25 moles of acetic acid, CH3COOH and 0.25 moles acetate ions, CH3COO, in sufficient water to make 1 L of solution. Added to the solution in one flask is 0.15moles of KHSO4. What is the effect on [CH3COOH) and
[CH3COO-)? Account for your answer in terms of number of moles of protons transferred. Has the capacity of the buffer been exceeded?

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16

explanation:

the marks go by 4s

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.