How much did one drop of HNO3 cause the pH of water to change?

One drop of HNO3 will cause the pH of water to change from 7 to 3

The pH of a solution is the negative logarithm of the hydrogen ion concentration of the solution.

At equilibrium, the pH of water = 7

The concentration of hydrogen ions is 10⁻⁷ M

If 0.1 mL (about one drop) of 1.0 M HNO3 is added to 100 mL of water: the volume of solution is 100.1 mL and the concentration of solution is calculated thus:

C₁V₁ = C₂V₂

C₂ = C₁V₁/V₂

C₂ = 0.1 * 1/100.1

C₂ = 9.99 * 10⁻⁴ M

Hydrogen ion concentration, [H⁺] = 9.99 * 10⁻⁴ M

pH = - log(9.99 * 10⁻⁴)

pH = 3

Therefore, one drop of HNO3 will cause the pH of water to change from 7 to 3

Learn more about pH at: link

-4

Explanation:

It went from a 7 to a 2 and 7-2 is 4, so it changed by 4 and it went down by 4.

the answer is the first option

explanation:

just googled it m8. not that hard

lol

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.