Buffers 1. Determine the pH of a solution that contains 0.376 M hydrogen phosphate (HPO ) and 0.468 M dihydrogen phosphate (H₂PO). Ka dihydrogen phosphate = 6.2 10* H_PO_(aq)+H_O H₂O*(aq) + HPO(aq)

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Q: Calculate the mass of aluminum used in the reaction with 30g of hydrochloric acid

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Q: The pH of a 0.50 M solution of ethylamine CH3CH₂NH2 is 12.21. Calculate the Kb of ethylamine. Use…

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Q: Write the reaction involved in the synthesis  of aspirin.

A: Aspirin Is  Analgesic and Antipyretic is used to releive pain and Fever .

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Q: Which chemical species will have the highest boiling point? Propane or Ethylamine

A:

Q: 4. Resonance. For each of the following structural formulas, provide the indicated of resonance…

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Q: Consider the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 83 ∘C , where [Fe2+]= 2.90 M and =[Mg2+]=…

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Q: Calculate the heat of reaction AH for the following reaction: 2 HCl(g) + Br₂(g) → 2 HBr(g) + Cl₂(g)…

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Q: 2. If the reaction is second order overall, what are the units of k? (a) M-¹g-1 (b) s (c) MS-1 (d) s

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Q: atomic mass 32.066 g/mol electronegativity 2.58 electron affinity 200.4 kJ/mol ionization energy…

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Q: What would have a higher melting poit KCI or MGO

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Q: Which set of quantum numbers (n, l, me, ms) is correct when n = 3? O3,1,-1,-1 3,3,-1,-1 3,1,2,-2…

A: Correct answer -->  3,1,-1, -1/2

Q: 2. Report the bond lengths and energies for C-C bonds with bond order of 1, 2, and 3. Explain any…

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Q: O NaCl O HC1 O Cl₂

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Q: Consider the reaction: N₂(g) + 3H₂(g) = 2NH3(g) AG°f (NH3) = -15.73kJ/mol Determine the equilibrium…

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Q: 12. Calculate pH in a 0,05M solution of Na2HPO4 (a buffer in water Ka3 for phosphoric acid)

A: Answer :-  Molarity of Na2HPO4 = 0.05 M  pH of Na2HPO4 = ? ----------------------------------------

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Q: What is the major organic product formed by the following reaction? اسما I III X NH IV II e N-H ?

A: Correct option is ' D '

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Precipitation Titration

Precipitation analysis is used to analyze drugs, and to measure the salt content in food and beverages. It is an important concept from the examination point of view many practical questions are asked on the topic. This topic is significant in the professional exams for both undergraduate and graduate courses, especially for