2] [2]
m
(e) The sulfur dioxide content of wine is most commonly measured by the Ripper Method which
involves titration with iodine in the presence of starch as an indicator.
SO2(aq) + 12(aq) + 2H2O(1) ► 21-(aq) + S0,2-(aq) + 4H+ (aq)
A 50.0 cm sample of wine required 12.35 cm of 0.010 moldm- (aq) for complete reaction
with the Soz
of
(i) How many moles of So, are present in 50.0 cm of wine?
[1]
moles of So, in 50.0 cm =
(ii) How many moles of So, are present in 1 dm of wine?
moles of So, in 1 dm =
[1]
(iii) How many milligrams, mg, of So, are present in 1 dm of wine? Give your answer to three
significant figures. (19 = 1000 mg)

Consider this equilibrium: n29) + o2(g) + 2no(c).nitrogen gas and oxygen gas react when placed in a closed container. as the reaction proceeds towards equilibrium, what happens to the rate of thereverse reaction?

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

The two naturally occurring isotopes of chlorine are 35cl (34.969 amu, 75.77%) and 37cl (36.966 amu, 24.23%). the two naturally occurring isotopes of bromine are 79br (78.918 rm amu, 50.69%) and 81br (80.916 amu, 49.31%). chlorine and bromine combine to form bromine monochloride, brcl. 1. how many peaks will be present in a mass spectrum for brcl? the four combinations of molecule possible given these four isotopes are: 81br37cl, 81br35cl, 79br37cl, and 79br35cl. 2. what are the masses of the four different brcl molecules? express the masses using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.