The Following Reaction Occurs Spontaneously

question 47

Multiple Choice

The following reaction occurs spontaneously. 2Al(s) + 6H⁺(aq) → 2Al³⁺(aq) + 3H₂(g) Write the balanced oxidation half-reaction.

• A) Al(s)→ Al³⁺(aq)+ 3e−
• B) Al³⁺(aq)+ 3e− → Al(s)
• C) H₂(g)→ 2H⁺(aq)+ 2e−
• D) 2H⁺(aq)+ 2e− → H₂(g)
• E) 2H⁺(aq)→ H₂(g)+ 2e−

Understand the basic notations and abbreviations used in engineering drawings.

Identify key symbols and their meanings related to surface finishes on drawings.

Recognize the conventions for specifying machining requirements on engineering drawings.

Grasp the significance of dimensioning and tolerance indicators in technical drafting.

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