If 5 mL of 0.1M HCl is added to 50 mL of 0.1M sodium phosphate buffer at pH 7.0, what is the resulting pH?
If 5 mL of 0.1M HCl is added to 50 mL of 0.1M sodium phosphate buffer...
If you add 2 mL of 1M HCl to 600 mL of 25 mM phosphate buffer (pH 8.0), what will be the resulting pH? (pKa of phosphate = 7.21)
1) How would you make 300 ml of a 0.1 M sodium phosphate buffer, pH 7.0 (pKa = 7.2) phosphate dibasic (the conjugate base). 2) What are the concentrations of acetate and acetic acid in a 0.2 M acetate buffer pH 5.3? The pKa for acetic acid is 4.76. 3)You have 100 ml of 0.1 M acetate buffer pH 5.2 (pKa 4.76). You add 10 ml of 0.1 M NaOH. Calculate the resulting change in pH and the buffering capacity...
pka=6.86 Calculations. Preparation of 0.1M phosphate buffer pH=74 1. Calculate the amount mL this buffer. O of NaH2PO4 (MW=120g/mol) you will need to prepare m 100 added to prepare 100ml of phosphate buffer 2. Calculate how many ml of 1M NaOH must be at pH=7.4. MOOS. O Imo.ea gnizim vd som slud 1096 MOOS.O ses to Horse Snodulo bios MOOS.Os lo Im 0.0a bris not to muit
Using a 0.25 M phosphate buffer with a pH of 7.0, you add 0.79 mL of 0.49 M HCl to 42 mL of the buffer. What is the new pH of the solution? Using a 0.25 M phosphate buffer with a pH of 7.0, you add 0.79 mL of 0.49 M NaOH to 42 mL of the buffer. What is the new pH of the solution?
.01 moles of gaseous HCl is added to 100-ml of the buffer composed of .5M sodium acetate and .5M acetic acid. Find the pH
9.30 mL of 0.1 M HCl are added to 200 mL of the buffer solution prepared in #8. What is the resulting pH? 8. A buffer solution is made by adding 20.4 grams of sodium acetate (NaCH CO2) toa 0.2M acetic acid (CH,CO2H) solution. The total volume of the resulting solution is exactly 1L. What is the phH of this solution? (Note: the pK, of acetic acid is 4.74) 20.4q NaCH3(02 82.034 9/mO 8203y g/mol .25 025 nol 1.0しー= 0.25mol...
Using a 0.20 M phosphate buffer with a pH of 7.0, you add 0.73 mL of 0.49 M HCl to 45 mL of the buffer. What is the new pH of the solution? (Enter your answer to three significant figures.) 4.9 6.63 x Using a 0.20 M phosphate buffer with a pH of 7.0, you add 0.73 mL of 0.49 M NaOH to 45 mL of the buffer. What is the new pH of the solution? (Enter your answer to...
6. How many mL of 0.2 M sodium acetate should be added to 200 mL of 0.2 M acetic acid to make a buffer of pH 5.5? (refer to Table 2-2 on page 60 for pKa values). What is the molarity of the resulting buffer with respect to acetate (acetate + acetic acid)? 7. How many mL of 0.2 M HCl should be added to 50 mL of 0.2 M Tris base (Trishydroxymethyl aminomethane) to make a buffer of pH...
A student was told to make a pH = 7.5 buffer from sodium dihydrogen phosphate and sodium hydrogen phosphate with an ionic strength of 0.10 a) What concentration of Na2HPO4 and NaH2PO4 need to be used? b) If 10.0 mL of 1.00 M Hbr is added to 1.00 L of this buffer, what is the pH? Please show work.
5. 1.5 mLs of 6 M HCl are added to 250 mL of water (pH=7.0). What is the resulting (H') and the final pH?