LiH reacts with AlCl3 to form a reducing agent A that reacts with boron halide B to give diborane. What is A and B?
A: LiAlCl3 B: BBr3
A: Li2AlCl3 B: BCl3
A: Li[AlH4] B: BBr3
A: Li[AlH4] B: BCl3
LiH + AlCl3 → Li[AlH4] + 3LiCl
Li[AlH4] + BCl3 → B2H6
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50 mL of 0.2 M ammonia solution is treated with 25 mL of 0.2 M HCl. If pKb of ammonia solution is 4.75, the pH of the mixture will be : Option: 1 3.75 Option: 2 4.75
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