Question

How many moles of H+(aq) ions are present in 750 mL of 0.65 M hydrochloric acid?

Answer 1

Answer: n (moles) = C (concentration) x V (volume in L)

n = 0.65 x 0.75

n = 0.4875 moles of HCl

HCl is a strong acid so it pretty much totally ionises so there are as many H+(aq) ions as there is HClHCl ==> H + Cl  

Explanation:

Answer 2

The number of moles that should be presented in hydrochloric acid should be 0.49 mol.

Given that,

• The molarity is 0.65M of hydrochloric acid.
• And, the volume is 750 mL.

So, the number of moles should be

$= \frac{0.65 \times 750}{1000}$

= 0.485 mol

= 0.49 mol

Therefore we can conclude that the number of moles that should be presented in hydrochloric acid should be 0.49 mol.

Learn more about the mole here: brainly.com/question/20290065