50 mL of 0.1 M acetic acid is mixed with 50 mL of 0.1 M sodium acetate (the conjugate base). The Ka of acetic acid is approximately 1. 74 X 10 -5. What is the pH of the resulting solution?

4.76

Explanation:

In this case, we have to start with the buffer system:

We have an acid () and a base (). Therefore we can write the henderson-hasselbach reaction:

If we want to calculate the pH, we have to calculate the pKa:

According to the problem, we have the same concentration for the acid and the base 0.1M. Therefore:

If we divide:

If we do the Log of 1:

So:

With this in mind, the pH is 4.76.

I hope it helps!

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j

space exploration has led to the development and technological improvement of many everyday items. (if this answer is wrong i will find the right answer) : )