The reaction of ZnBr₂ and Ba(OH)₂ produces
A. ZnO and BaBrH

B. ZnBa and BrOH

C. BaBr₂ and Zn(OH)₂

D. ZnBr₂ and Ba(OH)₂

Explanation:

ZnBr₂ is a salt,formed by the ions of zinc and bromine, Zn²⁺ and Br⁻.

Ba(OH)₂ is a hydroxide formed by barium cation,  Ba²⁺, and OH⁻ anion.

The typical reaction of a salt with an hydroxide is a double replacement.

Thus, the ions trade places producing other salt and other hydroxide:

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

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