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What is the pH of a solution that has a higher concentration of H+ ions than water?
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- 1. We have a 10% NaCl stock solution. Our nutrient solution is 3 mM for NaCl. How many ml of stock solution do we need for 500 ml of our solution nutrients? (MNaCl:58.49) 2. We work with a NaOH stock solution. We have to dilute 1: 4 to obtain a 2.5% solution. Find the concentration of the stock (% and mg/ml)hereby carbokydrates Which of the following is true concerning pH? from the plasm lledh 32. A. The pH of plasma is slightly acidic. B. The pH of body fluids is slighty alkalinie. C. The pH of the body fluids increases during exercise. D. The pH of the urine increases during exercise.The fluid with the lowest [H+] concentration A. Saliva (pH = 6.40) B. Lung fluid (pH = 7.60) C. Tears (pH = 7.40) D. Urine (pH = 6.80)
- 42. Classify each acid as strong or weak. If the acid is weak, write an expression for the acid ionization constant (Ka). a. HClO4 b. H3C6H5O7 c. HIO d. H3PO4Which of the following is FALSE when the concentration of the buffer solution was increased? a. The buffer will be effective in resisting pH changes. b. There will be more weak acid components that can neutralize the added base. c. The solution will have a higher buffer capacity. d. There will be more weak base components that can neutralize the added base.which of the following is a characteristic of a buffer? a. The pH will go down significantly when H3O+ is added to the buffer b. The pH will go down very slightly when H3O+ is added to the buffer c. The pH will go up significantly when H3O+ is added to the buffer
- In the human body,the -log of the hydrogen ion concentration ([H+]) is regulated by a. pH b. Acidity c.Alkalinity d.Bicarbonate ion e. Buffer systemWhich of the following statements is TRUE? A. Water and electrolytes move across the cell membranes only through protein channels B. Water and electrolytes cannot move across cell membranes C. Water freely moves across cell membranes D. Electrolytes freely move across cell membranesDefine the following terms: a. solvation sphere b. amphipathic c. micelle d. hydrophobic effect e. clathrate
- Which of the following depicts the mild alkalosis? Select one: O O O ATION a. pH=7.33 b. pH=7.45 c. H=7.65 d. pH=7Which of the following solutions has the greatest concentration of hydroxyl ions [OH-]? Select one: a. lemon juice at pH 2 O b. vinegar at pH 3 O c. tomato juice at pH 4 O d. urine at pH 6 e. seawater at pH 8Imagine that you have a jar of syrup A and a plastic Ziploc bag of syrup B. You poke tiny holes in the bag and put it inside the jar. Where will water move? Hint: remember that water moves from the more watery area (high concentration of water) to the less watery area (low concentration of water). Water moves from the bag (B) to the jar (A) Water moves from the jar (A) to the bag (B)