Write a Balanced Net Ionic Equation for the Reaction Below

question 74

Multiple Choice

Write a balanced net ionic equation for the reaction below in an acidic solution. Cr₂O₇^2-(aq) + Ni(s) → Cr³⁺(aq) + Ni²⁺(aq)

• A) Cr₂O₇^2-(aq)+ 3 Ni(s)+ 14 H⁺(aq)→ 2 Cr³⁺(aq)+ 3 Ni²⁺(aq)+ 7 H₂O( )
• B) Cr₂O₇^2-(aq)+ Ni(s)+ 14 H⁺(aq)→ 2 Cr³⁺(aq)+ Ni²⁺(aq)+ 7 H₂O( )
• C) Cr₂O₇^2-(aq)+ 3 Ni(s)→ 2 Cr³⁺(aq)+ 3 Ni²⁺(aq)+ O^2-(aq)
• D) Cr₂O₇^2-(aq)+ Ni(s)+ 14 H⁺(aq)→ 2 Cr³⁺(aq)+ Ni²⁺(aq)+ 7 H₂O( )
• E) Cr₂O₇^2-(aq)+ 3 Ni(s)+ 7 H⁺(aq)→ 2 Cr³⁺(aq)+ 3 Ni²⁺(aq)+ 7 OH^-(aq)

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Definitions:

Baddeley's Model

A model of working memory proposed by Alan Baddeley, which consists of three main components: the central executive, the phonological loop, and the visuospatial sketchpad.

Working Memory

A mental mechanism with finite capabilities, aimed at briefly storing information for subsequent processing tasks.

Short-Term Memory

The capacity for holding a small amount of information in an active, readily available state for a short period.

Everyday Memory

The capacity to remember and recall day-to-day events and interactions, crucial for normal functioning and social interaction.