Organic Chemistry Answers

A hypothetical acid HA has a dissociation constant 1.8 𝑥 10ିଷ.

a. Write a balanced dissociation reaction of the acid

b. Write the equilibrium constant expression for the acid

c. If the initial concentration of the acid is 0.5 M, determine its hydrogen ion

concentration.

d. Calculate the ionization constant

e. Comment on the strength of the acid.

hi, i would like to know how to draw the structure 2-propyl propanoate

thank you so much !!

Explain why pyrrole is aromatic

A balloon filled with helium has a volume of 37.1 L

37.1 L at 285 K.

285 K. What volume will the balloon occupy at 253 K?

253 K?

How many molecules are in 4.3 mol of H2O

1. At atmospheric pressure, a sample gas has a volume of 2.86 L at 29℃. What would its temperature be in Celsius if its volume increased to 2.86 L at the same pressure?

2.A balloon has a pressure of 2.05 atm at 28℃. If the temperature is reduced to 16℃, what will be the new pressure of the balloon?

3.A gas sample has a volume of 13.5 L at a pressure of 1.23 atm and a temperature of 34℃. What volume will the gas sample occupy at standard temperature and pressure (STP)? STP is 273.15 K and 1 atm, respectively.

4.Calculate the mass of 3.45 L SO2 at STP.

5.A gas sample is composed of 234 mol NO2 and 312 mol Cl2(g). determine the partial pressure of each gas if the sample’s total pressure is 30 atm.

What are the physical and chemical properties of essential oils?

A chemist wishes to make 5.00g of CuCl2(s) by the reaction:

CuCl2(aq) + Na2SO3(aq) + H2O(l) → CuCl(s) + Na2SO4(aq) + 2HCl(aq). How many grams of CuCl2 and of Na2CO3 should be used if the method gives an 85.0% yield, CuCl2 is to be the limiting reactant, and a 50.0% excess of Na2SO3 is to be used?

3) the addition of HBr to 2-methylpropene (H2C=C(CH3)2) gives two isomeric bromoalkanes of molecular formula (C4H9Br)

3iii) give a mechanic explanation for the

reaction and product distribution using the curly arrows (for full marks draw

the carbocation intermediate as the planar with an empty p-orbital and use red font for curly arrows) 25marks

3) the addition of HBr to 2-methylpropene (H2C=C(CH3)2) gives two isomeric bromoalkanes of molecular formula (C4H9Br)

3ii) indicate which would be the major

product.