What mass of potassium sulphate would you have to add to a 250 mL volumetric flask to make a solution in which [K+] = 0.100 M
2007-12-06 07:52:51 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
0.100M= n times 1000/ 250 -rearrange so it is working out n which is no.of moles. Mass = no.of of moles times by mr.
2007-12-06 08:15:19 · answer #1 · answered by Anonymous · 0⤊ 0⤋
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2016-12-17 09:26:49 · answer #2 · answered by ? 4 · 0⤊ 0⤋
1 mol. K2SO4 = 2*39.098 + 32.07 + 4*16 = 174.266 g
(0.100 mol./L)(0.250 L)(174.266 g/mol) = 4.35665 g ≈ 4.36 g
2007-12-06 08:18:17 · answer #3 · answered by Helmut 7 · 0⤊ 0⤋