Calcuate the pH of benzylpenicillin sodium solution (600mg/2mL) for injection (pKa=2.76, MW=356g/mole)
Calcuate the pH of benzylpenicillin sodium solution (600mg/2mL) for injection (pKa=2.76, MW=356g/mole)
What is the pH of a buffer solution prepared with a 0.5 M sodium citrate and 1% citric acid (pKa for citric acid = 3.13, MW = 192 g/mole).
1. What is the pH of a buffer solution prepared with a 0.4 M sodium citrate and 1% citric acid (pka for citric acid - 3.13, MW - 192 g/mol)? 8. A buffer solution is prepared using 0.4 mole of a weakly basic drug (pka - 10.1) and an unknown quantity of its salt. The final solution has a pH of 8.99. How much of the salt was used? 9. A buffer solution with a desired pH of 8.15 needs...
a) Calcuate the pH of a solution with [H3O+] = 6.54 x 10-3 M b) Calcuate the pOH of a solution with [H3O+] = 8.5 x 10-9 M c) A solution has a pH = 2.420, what is the [OH-]? d) A solution has a pOH = 1.0, what is the [OH-]? e) Calcuate the pH of a solution with [OH-] = 5.9 x 10-6 M
Consider a 1L, 200mm acetate buffer with pH = 6.0 and with a pKa of 4.73 C) What weight in grams of Sodium Acetate is needed to make this solution? MW Sodium Acetate = 136.08 g/mole > Ratio of ( x ) = 18.62 Instructor's Notes (9/6/19): If you were wondering why this sodium acetate has a higher MW than standard Sodium Acetate, it's because its Sodium Acetate Trihydrate as opposed to anhydrous Sodium Acetatel Take a moment to solve...
please answer all three
6. You made a solution of sodium benzoate by dissolving 1.9gm of sodium benzoate in 20ml of distilled water. Calculate its molarity (MW of sodium Benzoate 144gm) 7. You added 2ml of 3M HCL to the above benzoate solution and tested the pH which was 3.1. Given that the PKA of benzoic acid is 4.1, what are the ratios of sodium benzoate of benzoic acid in your reaction? 8. In the above experiment, what is the...
For acetic acid pKa =4.74. A buffer solution was made using 0.30 mole of acetic acid and an unspecified and amount of sodium acetatein water to make 2.00 liters of solution. The solution pH was 4.91. Calculate the number of moles of sodium acetate used.
1.Calcuate the pH of a solution with [H3O+] = 6.54 x 10-3 M 2.Calcuate the pOH of a solution with [H3O+] = 8.5 x 10-9 M
Convert 2.0 M of Phenobarbital sodium (MW: 254 g/mole) solution in water into % w/v and ratio strengths.
Calculate the pH of a 0.250 M solution of a sodium salt, NaA. pKa HA = 4.66
2- What is the pH for a 0.0140 M solution of sodium acetate (NaAc). The pKa value for acetic acid is 4.75. ANS: ...