0.158g of barium halide is completely reacted with H2So4 and 0.124g of BaSO4 is collected. Whats the identity of X for this barium halide

it is the most commonly accepted one

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.

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