1. Complete both questions: a. Prove that HSO4- can act as an amphoteric substance. b. Explain why...

1. Complete both questions: a. Prove that HSO₄^- can act as an amphoteric substance. b. Explain why CH₄ cannot act as an amphoteric substance.

2. Try this question again. Be sure to use claim-evidence-reasoning when you format your answer and be sure to show your work for any calculations performed to develop your evidence. Which is more dangerous if you spill it on your hand a 0.025 M HBr solution (Ka = 1.3 x 10⁶ ) or 0.75 M HClO₂ solution (Ka = 1.2 x 10^-2 )?

3. For each pair below indicate which is stronger and support your answer with an explanation. a. Which is a stronger acid, H₂S or PH₃? b. Which is a stronger base CO₃^-2 or C₂H₅O^-?

4. Calculate the equilibrium concentration of NO in the reversible reaction below using the initial concentrations given for each reactant and product. The equilibrium constant for the reaction is Kp = 20. 2 NO (g) ⇌ N2 (g) + O2 (g) Initial concentrations: [N2] = 0.5 atm, [O2] 0.5 atm, [NO] = 0.75 atm

Expert Solution

Solution to question 1:

A substance which is acting as both an acid and a base are called amphoteric in nature. That means it will be able to donate as well as accept protons.

a. HSO4- is amphoteric - Explanation:

It can lose the proton to become a sulfate ion in a basic environment.

HSO4- + B- HB + SO42-

It can accept another proton to become H2SO4 in an acidic environment.

HSO4- + H+ H2SO4

HSO4- accepts as well as donates protons when required depending upon the environemnt. Hence it is an amphoteric substance.

b. CH4 is not amphoteric - Explanation:

H2O can donate proton more readily than CH4 because O atom is more electronegative than C atom . Hence the acidity is far less for CH4. Further, it cannot accept a proton and form highly unstable CH5+ ion. Hence CH4 cannot act like an amphoteric substance.

queen_honey_blossom answered 1 year ago

1) Both HC2O4− and HS− are amphoteric. Write an equation to show how HC2O4− can act...

1) Both HC2O4− and HS− are amphoteric. Write an equation to show how HC2O4− can act as a base with HS− acting as an acid. Write an equation to show how HC2O4− can act as an acid with HS− acting as a base. 2) If Kb for NX3 is 1.5×10−6, what is the pOH of a 0.175 M aqueous solution of NX3? If Kb for NX3 is 1.5×10−6, what is the percent ionization of a 0.325 M aqueous solution of...

1). Both H2PO3− and HS− are amphoteric. Write an equation to show how H2PO3− can act...

1). Both H2PO3− and HS− are amphoteric. Write an equation to show how H2PO3− can act as a base with HS− acting as an acid. Express your answer as a chemical equation. Identify all of the phases in your answer. 2). Determine the pH of each of the following solutions. a). 8.59×10−2 M HClO4 b). a solution that is 4.7×10−2 M in HClO4 and 5.1×10−2 M in HCl c). a solution that is 1.10% HCl by mass (Assume a density...

Can anyone explain ligands, complex ion and amphoteric substances that can act as an acid or...

Can anyone explain ligands, complex ion and amphoteric substances that can act as an acid or base. (simply terms - high school student) It is for a lab I did of separation and identification of metal cations and I do not understand this to write a discussion part on my lab report. thank you

Explain how humans can act as both definitive and intermediate hosts?

1. Explain how an emulsifier can combine a nonpolar substance with a polar substance. 2. Mayonnaise...

1. Explain how an emulsifier can combine a nonpolar substance with a polar substance. 2. Mayonnaise is a thick mixture containing oil, vinegar (water-based), and a phospholipid molecule called lecithin found in the yolks of eggs. Mayonnaise cannot be made without lecithin. Explain why lecithin is a critical ingredient.?

a.) Prove the following: Lemma. Let a and b be integers. If both a and b...

a.) Prove the following: Lemma. Let a and b be integers. If both a and b have the form 4k+1 (where k is an integer), then ab also has the form 4k+1. b.)The lemma from part a generalizes two products of integers of the form 4k+1. State and prove the generalized lemma. c.) Prove that any natural number of the form 4k+3 has a prime factor of the form 4k+3.

Can both strands of DNA act as template? Can both DNA of homologous chromosomes serve as...

Can both strands of DNA act as template? Can both DNA of homologous chromosomes serve as template? How can you predict the sequence of proteins based on DNA sequences? In terms of transcription and translation, how can we predict if an allele will cause a dominant or a recessive condition, a loss-of-function or gain-of-function mutation? If all cells carry the same DNA information, how is it that different cells may carry out different functions or that particular traits be expressed...

1. Answer the questions below. a. Explain the SAGE model of mentor coaching. b. Why is...

1. Answer the questions below. a. Explain the SAGE model of mentor coaching. b. Why is it important to set goals and timelines in a mentor coach relationship?

Please explain both questions in detail. 1) Why do economies grow in the long run? What...

Please explain both questions in detail. 1) Why do economies grow in the long run? What factors explain differences in GDP per capita across countries? 2) Classic vs Keynesian Model. Explain the differences between assumptions, fiscal multipliers, etc.

(1)Prove that for every a, b ∈ R, |a + b| = |a| + |b| ⇐⇒...

(1)Prove that for every a, b ∈ R, |a + b| = |a| + |b| ⇐⇒ ab ≥ 0. Hint: Write |a + b| 2 = (|a| + |b|) 2 and expand. (2) Prove that for every x, y, z ∈ R, |x − z| = |x − y| + |y − z| ⇐⇒ (x ≤ y ≤ z or z ≤ y ≤ x). Hint: Use part (1) to prove part (2).

Question