Assume that an aqueous solution of hydroxide ion,OH-,represented by unshaded spheres,is allowed to mix with a solution of an acid,HnA,represented by gray spheres.Three possible outcomes are represented by boxes (a) -(c) ,where the black spheres represent An-,the anion of the acid.For clarity H2O molecules are not shown. 
-Which outcome corresponds to the reaction: H3AsO4 + 3 OH- → 3 H2O + AsO43-?
Definitions:
Thematic Apperception
A psychological method and assessment tool where individuals express their thoughts and feelings through the stories they make up about ambiguous images.
Need for Achievement
A psychological trait that drives an individual to pursue and attain goals, often characterized by determination and ambition.
Internal-External
A dimension in locus of control referring to the degree to which individuals believe they have control over events affecting them (internal) vs. believing external forces are responsible.
External Person
An individual viewed or considered from an external outlook, often in contrast to one's own internal perspective.
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