Chemistry Answers

The SO2 present in air is mainly responsible for the phenomenon of acid rain. The concentration of SO2 can be determined by titrating against a standard permanganate solution as follows:

5SO2 + 2MnO4 negative + 2H2O —> 5SO4 2 negative + 2Mn 2 positive + 4H positive

Calculate the number of grams of SO2 in a sample of air if 7.37 ml of 0.00800 M KMnO4 solution are required for the titration

If the silver phosphate solubility product –
Ag3PO4 for pKs = 18.2; the concentration of silver in a
saturated solution will be:

Find the percent by mass of oxygen (O) in potassium chlorate, KClO3.

Find the percent by mass of oxygen (O) in potassium chlorate, KClO3.

Balance the following redox equation by the ion-electron method: (in acidic solution)

H₂O₂ + Fe²⁺ --> Fe³⁺ + H₂O 

(electrochem)

1)Half Reactions 2)Oxidizing Agent 3) Reducing Agent

Oxidation: (Element) (Element)

Reduction:

a.   2Sr + O₂ à 2SrO =

b.   2Li + H₂ à 2LiH=

c.   2Cs + Br₂ à 2CsBr=

d.   3Mg + N₂ à Mg₃N₂₌

 (electrochemistry)

How many grams of glucose, C6H12O6 would you need to prepare 2.0 l of 2% glucose solution

A solution of hydrochloric acid in water is 60.0% HCl and 40% water, H2O, by weight. The solution has a density of 1.19 g/mL. What is the

a. molarity of hydrochloric acid (with water as the solvent)?

1. Show the structural formulae for the main product of each of the following

addition reactions between various

e) 2-Methylbut-2-ene and hydrogen iodide

f) But-1-ene and hydrogen bromide where everything is pure

g) but-1-ene and hydrogen bromide in the presence of oxygen or

organic peroxides and a hydrogen halide.

In functional group, how can you distinguish between hexylamine (C6H13NH2) and aniline? Like, is there a type of test that should be used to differentiate them ?