Chemistry Answers

Write the balanced equation for the ionization of the weak base pyridine, C5H5N, in water,H2O. Phases are optional.

Using chemical equations, show how the triprotic acid H3PO4 ionizes in water. Phases are optional.

𝐾a1:

𝐾a2:

𝐾a3:

For the diprotic weak acid H₂A, 𝐾a1=3.6×10^−6 and 𝐾a2=6.2×10^−9

What is the pH of a 0.0700 M solution of H2A? 

pH=

What are the equilibrium concentrations of H2A and A2− in this solution?

[H2A]=

[A^2−]=

What is the theoretical yield in g of Ag₂S produced from the reaction?

2Ag (S) + s (S) -- Ag2s (S)

Draw the cis- and trans- forms of 1,3-dimethylecyclobutane. Which one of these

(i) will be polar in nature?

(ii) has higher melting point?

Explain your answer giving reasons.

3. what voltage will be generated by the cell that is Constructed by immersing silver wire in AgNo3 Solution of 1.5M and cadmium wire in CdSo4 Solution of 0.75M Cdso4 Solution at 300k, Given Eº Ag = + 0.8 V and E°cd= -0.4 v respectively. Write the cell representation and cell reactions.

Write the values of four quantum numbers for the electrons present in the following orbitals.

(i) 2p

(ii) 3d

(iii) 4f

How many moles of h2so4 are produced from 1.25 mol so2

The solubility of silver chloride AgCl is 1.2×10^-10 at 298 Kelvin. Calculate the solubility of silver chloride AgCl.

( Using k_sp= s²)

Calculate the ∆H for the reaction: CS² (I) + 2 O² (g) CO² (g) + 2 SO² (g) what is the answer?