Write a Balanced Chemical Equation for the Oxidation of Solid $\ell$

question 8

Multiple Choice

Write a balanced chemical equation for the oxidation of solid cadmium by concentrated nitric acid, producing nitrogen dioxide gas and Cd²⁺(aq) ion.

• A) HNO₃(aq) + Cd(s) ? Cd²⁺(aq) + NO₂(g) + OH^-(aq)
• B) 2 HNO₃(aq) + Cd(s) ? Cd²⁺(aq) + 2 NO₂(g) + 2 OH^-(aq)
• C) HNO₃(aq) + Cd(s) + H⁺(aq) ? Cd²⁺(aq) + NO₂(g) + H₂O( \(\ell\) )
• D) 4 HNO₃(aq) + Cd(s) ? Cd²⁺(aq) + 2 NO₂(g) + 2 H₂O( \(\ell\) ) + 2 NO₃^-(aq)
• E) HNO₃(aq) + Cd(s) ? Cd²⁺(aq) + NO₂(g)

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Definitions:

Behavioral Activation

A therapy technique designed to help patients engage more in their lives through activities that are aligned with their values, to combat depression.

Avoidance Behaviors

Actions taken to prevent or evade experiencing uncomfortable or distressing thoughts, feelings, or situations.

Depression

A common and serious mood disorder that negatively affects how you feel, think, and handle daily activities, characterized by persistent feelings of sadness and/or loss of interest.

Behavioral Activation

A therapy approach focusing on engaging individuals in positively reinforcing activities to combat depression and increase their quality of life.