Choose the most acidic substance in the group.
2 answers:
Answer: lemon juice, pH = 2.25
Explanation:
pH is the measure of acidity or alkalinity of a solution.
Acids are the substances which dissociate in water to give ions. Acids have pH raging from 1 to 6.9
pH is calculated by taking negative logarithm of hydrogen ion concentration.
Thus as pH and are inversely related, a solution having lower pH will have more amount of
concentration and thus would be more acidic.
Thus lemon juice with lowest pH of 2.25 will have highest concentration of hydrogen ions and is most acidic.
You might be interested in
Answer:
equilibrium position.
Explanation:
In simple harmonic motion , velocity v(t) is given by,
v(t) = -ω A sin(ωt + φ)
where
ω = angular velocity of the corresponding circular motion
A = amplitude
t = time
φ = the initial angle of the corresponding circular motion when the motion begin.
v (t) get maximized when sin value is maximized , i.e. sin =1
The particle has maximum speed when it passes through the equilibrium position.