Barium reacts with water to produce barium hydroxide and hydrogen gas. How many moles of barium hydroxide are produced when 250.0 mL of water is consumed? What is the total number of moles of ions from barium hydroxide produced in this reaction?

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 answer would be a