What is the pH of the buffer that results when 10.0 g of NaH2PO4 and 15.0...
What is the pH of the buffer that results when 10.0 g of NaH2PO4 and 15.0 g of Na2HPO4 are diluted with water to a volume of 0.50 L? (Ka of H2PO4- = 6.2 × 10-8, the molar masses of NaH2PO4 and Na2HPO4 are 120.0 g/mol and 142.0 mol, respectively)
a) 7.31 b) 7.21 c) 7.13 d) 8.05 e) 8.39
Answer is a. Please show calculations. I keep working on it and cant seem to get the right answer.
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What is the pH of the buffer that results when 10.0 g of NaH2PO4
and 15.0...
What is the pH of the buffer that results when 14.0 g of NaH2PO4 and 7.84...
What is the pH of the buffer that results when 14.0 g of NaH2PO4 and 7.84 g of Na2HPO4 are diluted with water to a volume of 0.940 L? (K, of H2PO4 = 6.2E-8, the molar masses of NaH2PO4 and Na2HPO4 are 120.0 g/mol and 142.0 g/mol, respectively) 0 7.21 0 7.53 0 -6.88 O 6.96 O 6.88
CHEVI 1045PU5-2010-13095 What is the pH of the buffer that results when 15.0 g of NaH3PO4 and 5.00 g of NazHPO4...
CHEVI 1045PU5-2010-13095 What is the pH of the buffer that results when 15.0 g of NaH3PO4 and 5.00 g of NazHPO4 are diluted with water to a volume of 0.50 L? (Kof H2PO4 = 6.2 x 10, the molar masses of NaH2PO, and Na2HPO4 are 120.0 g/mol and 142.0 mol, respectively) Answer: Check EQUL 485 Uweg Alle ledicamento Villase the pill off Post-Laboratory Questions (Use the spaces provided for the answers and additional paper il necessary 1. Briefly comment on...
Item 1: Question (10 pts.) What is the pH of the buffer that results when 13.4...
Item 1: Question (10 pts.) What is the pH of the buffer that results when 13.4 g of NaH,PO, and 5.09 g of Na HPO4 are diluted with water to a volume of 0.912 L? (K, of H,PO4 = 6.2E-8, the molar masses of NaH,PO, and Na HPO, are 120.0 g/mol and 142.0 mol, respectively) Submit Submit and Next O: Mark this question for later review. Skip to Next →
If you need Ka values, you should use this table: Use the References to access important...
If you need Ka values, you
should use this table:
Use the References to access important values if needed for this question. What is the pH of the buffer that results when 13.5 g of NaH2PO4 and 5.39 g of Na2HPO4 are diluted with water to a volume of 0.759 L? (Kof H2PO4 = 6.2E-8, the molar masses of NaH2PO4 and Na2HPO4 are 120.0 g/mol and 142.0 g/mol, respectively) 6.74 Oo oo O 6.81 O -6.74 O 7.21 O 7.68...
Use the References to access important values if needed for this question. What is the pH...
Use the References to access important values if needed for this question. What is the pH of the buffer that results when 13.5 g of NaH PO, and 7.26 g of Na2HPO, are diluted with water to a volume of 0.954 L? (K, of H PO - 6.2E-8, the molar masses of NaH PO, and Na, HPO, are 120.0 g/mol and 142.0 g/mol, respectively) 7.55 6.94 -6.87 7.21 6.87
You are instrucbed to create 900. mL of a 0.59 M phosphate buffer with a pH...
You are instrucbed to create 900. mL of a 0.59 M phosphate buffer with a pH of 6.4. You have phosphoric acid and the sodium salts NaH2PO4, Na2HPO4, and Na3PO4 available. numerical answers to three significant H3PO4(s)H20)H3 aH2PO4(aq) H2PO4-(aq) + H2O(りーH3O + (aq) + HP042-(aq) Ka2-6.2×10-8 HPO()H20()H3)PO43 (aq) Ka 4.8x10-13 Ka 6.9x10-2 Which of the available chemicals will you use for the acid component of your buffer? O H3PO4 O Na2HPO Na3PO4 Which of the available chemicals will you use...
What is the pH of the buffer that results when 6.54 g of NH3 and 5.35...
What is the pH of the buffer that results when 6.54 g of NH3 and 5.35 g of NH4Cl are diluted with water to a volume of 500 mL? (Ka for NH4+ = 5.6 × 10-10.) A.5.33 B.9.84 C.9.16 D.8.67 E.9.34
1 . If a buffer solution is 0.260 M in a weak acid (?a=8.3×10−5)and 0.480 M in its conjugate base, what is the pH? pH= 2...
1 . If a buffer solution is 0.260 M in a weak acid (?a=8.3×10−5)and 0.480 M in its conjugate base, what is the pH? pH= 2. If a buffer solution is 0.200 M in a weak base (?b=5.0×10−5) and 0.530 M in its conjugate acid, what is the ph 3. Phosphoric acid is a triprotic acid (?a1=6.9×10−3, ?a2=6.2×10−8 , and ?a3=4.8×10−13 To find the pH of a buffer composed of H2PO4 - (aq) ) and HPO4 2− (aq) , which...
What is the pH of the buffer that results when 14.0 g of NaH2PO4 and 7.84 g of Na2HPO4 are diluted with water to a volume of 0.940 L? (K, of H2PO4 = 6.2E-8, the molar masses of NaH2PO4 and Na2HPO4 are 120.0 g/mol and 142.0 g/mol, respectively) 0 7.21 0 7.53 0 -6.88 O 6.96 O 6.88
CHEVI 1045PU5-2010-13095 What is the pH of the buffer that results when 15.0 g of NaH3PO4 and 5.00 g of NazHPO4 are diluted with water to a volume of 0.50 L? (Kof H2PO4 = 6.2 x 10, the molar masses of NaH2PO, and Na2HPO4 are 120.0 g/mol and 142.0 mol, respectively) Answer: Check EQUL 485 Uweg Alle ledicamento Villase the pill off Post-Laboratory Questions (Use the spaces provided for the answers and additional paper il necessary 1. Briefly comment on...
Item 1: Question (10 pts.) What is the pH of the buffer that results when 13.4 g of NaH,PO, and 5.09 g of Na HPO4 are diluted with water to a volume of 0.912 L? (K, of H,PO4 = 6.2E-8, the molar masses of NaH,PO, and Na HPO, are 120.0 g/mol and 142.0 mol, respectively) Submit Submit and Next O: Mark this question for later review. Skip to Next →
If you need Ka values, you
should use this table:
Use the References to access important values if needed for this question. What is the pH of the buffer that results when 13.5 g of NaH2PO4 and 5.39 g of Na2HPO4 are diluted with water to a volume of 0.759 L? (Kof H2PO4 = 6.2E-8, the molar masses of NaH2PO4 and Na2HPO4 are 120.0 g/mol and 142.0 g/mol, respectively) 6.74 Oo oo O 6.81 O -6.74 O 7.21 O 7.68...
Use the References to access important values if needed for this question. What is the pH of the buffer that results when 13.5 g of NaH PO, and 7.26 g of Na2HPO, are diluted with water to a volume of 0.954 L? (K, of H PO - 6.2E-8, the molar masses of NaH PO, and Na, HPO, are 120.0 g/mol and 142.0 g/mol, respectively) 7.55 6.94 -6.87 7.21 6.87
You are instrucbed to create 900. mL of a 0.59 M phosphate buffer with a pH of 6.4. You have phosphoric acid and the sodium salts NaH2PO4, Na2HPO4, and Na3PO4 available. numerical answers to three significant H3PO4(s)H20)H3 aH2PO4(aq) H2PO4-(aq) + H2O(りーH3O + (aq) + HP042-(aq) Ka2-6.2×10-8 HPO()H20()H3)PO43 (aq) Ka 4.8x10-13 Ka 6.9x10-2 Which of the available chemicals will you use for the acid component of your buffer? O H3PO4 O Na2HPO Na3PO4 Which of the available chemicals will you use...
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