1.

A quantity of electrical charge that brings about the deposition of 4.5 g Al from Al^(3+) at the cathod will also produce the following volume (STP) of H_2(g) from H^(+) at the cathode

Answer»

44.8 L
22.4 L
11.2 L
5.6 L

Solution :`AL to Al^(+3)+ 3e^(-) , 27 GM to 3F , 4.5 gm to ? = (4.5 XX 3)/(27)=0.5F`
`2H^(+) + 2e^(-) to H_2 , 2F to 22.4l 0.5 F to ?`
Volume of `H_2 ` from ` H^+` at cathode `= (0.5)/(2) xx 22.4 = 5.6l`


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