Each oxy-acid contains at least one X—OH unit (X is non-metal). The H-atom of X—OH unit is ionisable and the number of —OH groups directly attach to non-metal decides the basicity of oxy-acid.

Question

Each oxy-acid contains at least one X—OH unit (X is non-metal). The H-atom of 
X—OH unit is ionisable and the number of —OH groups directly attach to non-metal
decides the basicity of oxy-acid.

Prashant Kotian · Accepted Answer

Correct answer: A. Step 1: Identify that aluminum carbide (Al4C3) contains Al3+ and C4- ions. Step 2: On hydrolysis, the C4- ion reacts with protons from water to produce methane (CH4) gas. Step 3: Carbides that yield methane upon hydrolysis are classified as methanides. Thus, Al4C3 is an ionic methanide, corresponding to option (b).

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