Light, Energy, and the Hydrogen Atom
a. Which has the greater wavelength, blue light or red light?
b. How do the frequencies of blue light and red light compare?
c. How does the energy of blue light compare with that of red light?
d. Does blue light have
1. Why benzamide undergo H.r. and not N-methylbenzamide?
The first compound undergoes Hoffman rearrangement because it has H-atom connected with
nitrogen atom. The mechanism is following:
The second compound doesnt undergo the same rearrangement
Problem: You use 25mL of 6.0M NaOH to neutralize 100mL of an unknown acid in a titration
experiment. What is the molarity of the acid? Show work.
Solution: The shortened ionic chemical equation of neutralization: H+ + OH- = H2O;
The quantities of moles of
simple alkenes such as ethene undergo addition with chorine and bromine at room temperature
whereas simple alkanes such as methane react at elevated temperatures on in the presence of
ultraviolet light. how do you account for the difference in reactivity
When a 2.558g sample of washing soda (Na2CO3 x XH20) is heated, all the water of hydration is
lost, leaving 0.948g of Na2CO3. What is the value of X?
Solution: The process of dehydratation can be described with the following equation:
Na2CO3 x XH2O = Na2C
How do i find the net ionic equation for the reaction between ammonium hydroxide and
Solution. The molecular reaction can be described with the following equation:
3NH4OH + FeCl3 = Fe(OH)3 + 3NH4Cl.
Net ionic equation describes the rea
Problem: molecular mass of acetic acid in benzene.
Solution: No matter in what solvent the substance will be diluted. The molar mass is a constant for
different molecules. The molecule of acetic acid consists of Carbon, Oxygen and Hydrogen.
Formula can be