What is the volume, in milimiters, of a 0.350 M KOH needed to completely neutralize 15.0 ml of a 0.250 M H2SO4 solution?

The volume of KOH needed for complete neutralization is 2.143 ml

Explanation:

Complete neutralization reaction is given below as;

H₂SO₄  + 2KOH ---------> K₂SO₄ + 2H₂O

Acid to base ratio, na : nb = 1 : 2

where;

is the concentration of the acid ( H₂SO₄) = 0.25 M

is the concentration of the base (KOH) = 0.35 M

is the volume of the acid = 15 ml

is the volume of the base = ?

The volume of KOH needed for complete neutralization is 2.143 ml

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explanation:

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s