(Answered) An aqueous solution containsnbsp021nbspmnbsphydrocyanic

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An aqueous solution contains 0.21 M hydrocyanic acid.

One Liter of this solution could be converted into a buffer by the addition of:

(Assume that the volume remains constant as each substance is added.)

0.10 mol HNO₃
0.21 mol NaCl
0.22 mol NaCN
0.052 mol Ba(OH)₂
0.22 mol HNO₃

An aqueous solution contains 0.26 M ammonium iodide.

One liter of this solution could be converted into a buffer by the addition of:

(Assume that the volume remains constant as each substance is added.)

0.12 mol HI
0.26 mol HI
0.25 mol NH₃
0.25 mol KI
0.06 mol Ba(OH)₂

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