Combining Aqueous Solutions of BaI₂ and Na₂SO₄ affords a Precipitate

question 18

Multiple Choice

Combining aqueous solutions of BaI₂ and Na₂SO₄ affords a precipitate of BaSO₄.Which ions are spectator ions in the reaction?

• A)Ba²⁺ only
• B)Na⁺ only
• C)Ba²⁺ and SO₄^2-
• D)Na^{+ and I-}
• E)SO₄^2- and I^-

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Definitions:

Per Capita Water Use

The average amount of water consumed per person in a given area or community within a specified time period.

Demographic Transition

A model describing the transformation of a country from high birth and death rates to low birth and death rates as it develops economically, leading to a stable population size.

Birthrates

The number of live births per thousand people in a population over a given period of time.

Death Rates

A rate indicating the frequency of deaths among a distinct cohort, normalized to its population size, during a specific timeframe.