Question

Question 1 of 30
An unknown surface is irradiated with
photons and unknown particles are
emitted from the surface and that it
follows the photoelectric equation.
Calculate the threshold frequency.
(nm)
500450
v x 10%(ms-1) 100 200​

Answer 1

Explanation:

weak acids → releases less number of H+ ions → acetic acid

strong base → give more OH– ions → NaOH

weak base → gives less OH– ions → CH3COOH

Bases: Bases are bitter in taste, turns red litmus to blue and when dissolved in water releases OH– ions;

e.g., NaOH and KOH.