. What mass of A chemistry graduate student is given 450 mL of a 0.90 M...
What mass of A chemistry graduate student is given 450 ml of a 0.90 M pyridine (C.H.N) solution. Pyridine is a weak base with K-1.7x10 C H NHCI should the student dissolve in the C H N solution to turn it into a buffer with pH-5.597 You may assume that the volume of the solution doesn't change when the C, H, NHCl is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant...
- 7.4 x 10 What A chemistry graduate student is given 125. ml. of a 0.50 M trimethylamine (CH N ) solution. Trimethylamine is a weak base with K mass of (CH), NHCI should the student dissolve in the (CH), N solution to turn it into a buffer with pH = 11.05? You may assume that the volume of the solution doesn't change when the (CH), NHCl is dissolved in it. Be sure your answer has a unit symbol, and...
A chemistry graduate student is given 100 mL of a 0.60 M trimethylamine ((CH), N solution. Trimethylamine is a weak base with K - 7.410 mass of (CH), NHCI should the student dissolve in the (CH), N solution to turn it into a buffer with pH - 11.067 . What You may assume that the volume of the solution doesn't change when the (CH), NHCl is dissolved in it. Be sure your answer has a unit symbol, and round it...
A chemistry graduate student is given 450. mL of a 0.90 M nitrous acid (HNO2) solution. Nitrous acid is a weak acid with K-4.5x10 . What mass o KNO2 should the student dissolve in the HNO2 solution to turn it into a buffer with pH-3.20? You may assume that the volume of the solution doesn't change when the KNO2 is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.
- 4 A chemistry graduate student is given 500. mL of a 0.90 M trimethylamine (o N) solution. Trimethylamine is a weak base with K,=7.4 10 4. What mass of (CH3), NHBr should the student dissolve in the (CH3), N solution to turn it into a buffer with pH = 10.45? You may assume that the volume of the solution doesn't change when the (CH) NHBr is dissolved in it. Be sure your answer has a unit symbol, and round...
A chemistry graduate student is given 450. mL of a 0,60 M methylamine (CH NH, solution, Methylamine is a weak base with of CH NH,Br should the student dissolve in the CH, NH, solution to turn it into a buffer with pH - 11.09 4.4 x 10 What mass You may assume that the volume of the solution doesn't change when the CH, NH Br is dissolved in it. Be sure your answer has a unit symbol, and round it...
A chemistry graduate student is given 250. mL of a 0.90 M diethylamine NH) solution. Diethylamine is a weak base with K= 1.3 x 10 . What mass of (C2H5) NH2Cl should the student dissolve in the (C2H5) NH solution to turn it into a buffer with pH = 10.59? You may assume that the volume of the solution doesn't change when the (C, NH,Cl is dissolved in it. Be sure your answer has a unit symbol, and round it...
. What A chemistry graduate student is given 450. mL of a 0.60 M hydrocyanic acid (HCN) solution. Hydrocyanic acid is a weak acid with K =4.9 10 mass of KCN should the student dissolve in the HCN solution to turn it into a buffer with pH = 9.14? You may assume that the volume of the solution doesn't change when the KCN is dissolved in it. Be sure your answer has a unit symbol, and round it to 2...
. What A chemistry graduate student is given 450. mL of a 0.60 M hydrocyanic acid (HCN) solution. Hydrocyanic acid is a weak acid with K =4.9 10 mass of KCN should the student dissolve in the HCN solution to turn it into a buffer with pH = 9.14? You may assume that the volume of the solution doesn't change when the KCN is dissolved in it. Be sure your answer has a unit symbol, and round it to 2...
A chemistry graduate student is given 125. mL of a 0.90 M nitrous acid (HNO2) solution. Nitrous acid is a weak acid with Ka = 4.5 x 10-4. What mass of KNO, should the student dissolve in the HNO2 solution to turn it into a buffer with pH = 3.18? 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...