A chemistry graduate student is given 250. mL of a 0.90 M diethylamine NH) solution. Diethylamine...
What A chemistry graduate student is given 250. mL of a 0.40 M dimethylamine (CH), NH solution. Dimethylamine is a weak base with K -5.4 x 10 mass of (CH), NH,CI should the student dissolve in the (CH), NH solution to turn it into a buffer with pH 10.327 You may assume that the volume of the solution doesn't change when the (CH), NH,Cl is dissolved in it. Be sure your answer has a unit symbol, and round it to...
What mass of NH C1 A chemistry graduate student is given 250. mL of a 0.40 M ammonia (NH) solution. Ammonia is a weak base with K = 1.8 x 10 should the student dissolve in the NH, solution to turn it into a buffer with pH = 8.66? You may assume that the volume of the solution doesn't change when the NH C1 is dissolved in it. Be sure your answer has a unit symbol, and round it to...
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...
. What mass of A chemistry graduate student is given 450 mL of a 0.90 M pyridine (CHN) solution. Pyridine is a weak base with K, -1.7*10 CH NHCI should the student dissolve in the CHN solution to turn it into a buffer with pH = 5.007 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...
A chemistry graduate student is given 125. mL of a 0.30 M methylamine (CH3NH2) solution. Methylamine is a weak base with K= 4.4 x 10 . What mass of CH3NH2Cl should the student dissolve in the CH3NH, solution to turn it into a buffer with pH = 10.30? You may assume that the volume of the solution doesn't change when the CH NH2Cl is dissolved in it. Be sure your answer has a unit symbol, and round it to 2...
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...
- 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 0.90 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.
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...
A chemistry graduate student is given 125. mL of a 0.90 M hydrocyanic acid (HCN) solution. Hydrocyanic acid is a weak acid with Ka = 4.9 10 -10 What mass of KCN should the student dissolve in the HCN solution to turn it into a buffer with pH = 9.44? 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...