It takes 35 mL of a 4.5 M Na OH solution to complete neutralization 275 mL of an HCI solution what is the concentration of the HCI solution

pure substance: iron,copper

impure substance: water,charcoal

in the given question, the partial pressure is calculated by using the ideal gas equation, that is, pv = nrt

here, p is pressure, v is volume = 25 l, n is number of moles = 0.0104 moles, r is gas constant = -0.0821 l.atm / mol.k

t is temperature = 273 k

p = nrt / v

p = (0.0104 mol × 0.0821 l.atm / mol.k × 273 k) / 25 l

= 0.0093 atm

the correct answer is:

a. formation of precipitation