As you saw in the video, the ph of a 0.1 m solution of acetic acid, hc2h3 02, (ka 1.8 x 10^-5) is 2.9. based on this observation, which statement below best describes the ph of a 0.1 m solution of lactic acid, hc3h o3, (ka e 1.4 x 10^-4)?
a) since lactic acid has a larger acid dissociation constant than acetic acid, a 0.1 m solution of lactic acid will have a larger ph value than a 0.1 macetic acid solution.
b) the ph of a 0.1 m acetic acid solution will be equal to the ph of a 0.1 m lactic acid solution since both are weak acids.
c) since lactic acid has a larger acid dissociation constant than acetic acid, a 0.1 m solution of lactic acid will have a smaller ph value than a 0.1 m acetic acid solution.
d) since lactic acid has a smaller acid dissociation constant than acetic acid, a 0.1 m solution of lactic acid will have a larger ph value than a 0.1 m acetic acid solution.

I haven't seen the video this is the hardest question for me to answer

Explanation:

Since lactic acid has a larger acid dissociation constant than acetic acid, a 0.1 M solution of lactic acid will have a smaller pH value than a 0.1 M acetic acid solution.

Explanation:

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