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A chemistry graduate student is given 250
A chemistry graduate student is given 250. mL of a 1.60 M nitrous acid (HNO, ) solution. Nitrous acid is a weak acid with K = 4.5 x 10 *. What mass of KNO, should the student dissolve in the HNO, solution to turn it into a buffer with ph = 3.09? significant digits. You may assume that the volume of the solution doesn't change when the KNO, is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 xTo X 5 ?
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