Solution A contains 30g of acid in 500cm3 of water and solution B contains 15g of acid in 250cm3 of water. Which one is more concentrated? Show your working.
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The concentration of an acid solution can be measured by the formula:
(weight of acid)/(volume of solution) X 100 %
Solution A:
Concentration = 30/500 X 100 => 6 % w/v acid solution
Solution B:
Concentration= 15/250 X 100 => 6 % w/v acid solution
Hence, both solution A and solution B are of the same concentration.
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