Question

during an experiment two students were asked to prepare a 10 percent [mass/ mass] solution of sugar and water. student A dissolved 10g of sugar in 100g of water and while student B prepared by dissolving 10g of sugar in water to make 100g solution. [a] are the twosolution of same consentration? [b] compare the mass %of two solutions

Answer 1

No, both have different concentrations because -

A has 110gm(100gm water + 10gm sugar)

B has 100gm(90gm water + 10gm sugar)

Mass % of A = 10/100 * 100= 10%

Mass % of B = 10/90 *100 = 11.1%

Therefore, 10 is to 11

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