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A few questions regarding the synthesis of p-bromoaniline labreally bother me and would like someone to clear them up.
1) Why do we have to parafilm or cover the beaker containingp-bromoaniline before we put it away for next lab? Is it so that itdoes not get oxidized by oxygen? If so, how?
2) If there is some alcohol left in the product (p-bromoaniline),is it safe to run IR without removing it? I would assume that therewould be an O-H peak in the IR if alcohol is not removed and itwould give a false result. Please explain. If we remove the alcohol, what is the risk associated with it?
calculate the concentration of arsenic in ppb in a 0.05 mgl solution. assuming that the solution is entirely water and
Determine what would be its temperature after absorption of 9.4 * 10-2 kWh of heat If 1.45 L of water is initially at 25.0 °C,?
Which of the following has the greatest buffer capacity. a) 0.40 M CH3COONa/0.20 M CH3COOH, b) 0.40 M CH3COONa/0.60 M CH3COOH, and c) 0.30 M CH3COONa/0.60 M CH2COOH.
The three gases N2, O2, and NO are in equilibrium. The formation of NO is endothermic. Write the equation for the equilibrium. (Type your answer using the format CO2 for CO2. Use the lowest possible coefficients.)
the reaction of no with cl2 is2 no cl2 2 nocluse reactant molecules to write appropriate elementary reactions that
A mixture of CS2 (g) and excess O2 (g) is placed in a 10.0 L reaction vessel at 100.0 degrees C and the pressure of 3.00 atm, A spark causes the CS2 to ignite, burning it completely, according to the equation:
An aqueous solution of a compound with a very high molar mass was prepared in a concentration of 29.7 g·L-1 at 25 °C. Its osmotic pressure was 0.184 ·102 Pa. Calculate the molar mass of the compound
In the reaction between glucose and oxygen 10.0 g of glucose reacts and 7.50 L of carbon dioxide is formed. What is the percent yield if the density of CO2 is 1.26 g/L?
A cylinder is separated into two sections Y and Z by an insulating frictionless piston and sealed at both ends. Each section has two moles of an ideal gas.
A substance has a solubility of 350 ppm. How many grams of the substance are present in 1.0 L of a saturated solution.
When you heat baking soda (NaHCO3), it breaks down into sodium carbonate powder (Na2CO3), carbon dioxide and water vapor. Write a correct thermo chemical equation and explain what it tells you about the reaction ( The enthalpy of this reaction is ..
Determine the molar solubility for Copper (II) hydroxide in (a) a water solution at 25 degrees Celsius, and (b) in a solution having a pH of 8.75 at 25 degrees Celsius.
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