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CO (g) + H2 (g)C (s) + H2O (g) ∆H = -131 kJ.mol-1
Explain how and why the equilibrium position and the concentration of H2 would change if:
a) more carbon is added.
b) the concentration of CO is increased.
c) the pressure inside the container is increased.
d) the temperature is lowered.
Draw stereoisomers that possible for 2,3-Diamino-2,3-pentanediol
The results of a titration experiment were as follows:
Volume of aqueous NaOH pipetted into the conical flask = 10.00 ml
Average volume of dilute HCI added from the burette to reach the
endpoint = 12.54 mL.
Molarity of the dilute HCI = 1.196 M
1- Calculate the number of moles of HCI added during the titration.
-What is the number of moles of NaOH that has reacted during the titration?
-What is the molarity of the aqueous NaOH?
What is the fate of Fe, Mn, Cu, and Mo micronutrients in soils that are rich or low in macronutrients content, as well as their availability to plants in such soils? (04)
Q.No.3. How do soils with varying microbial characteristics control the bioavailability and mobility of Fe, of Zn, B, and Mn to various plants?
The mass of calcium carbonate in a 0.125 g stick of chalk is determined by dissolving the chalk in 50.0 mL of 0.20 M HCl and then titrating any excess HCl with a standardized solution of KOH. A volume equal to 32.12 mL of 0.250 M KOH is required to reach the endpoint.
A) How many millimoles of the excess HCl was back-titrated?
An erlenmeyer flask contains 50.0 mL of an aqueous solution of 0.425 M acetic acid (CH3COOH). Given that acetic acid has a Ka = 1.75 x10^-5.
B) Calculate the pH of the resulting solution when the original solution is mixed with 35.0 mL of 0.975 M NaOH solution.
Addition reactions should be explained with aldehydes and ketones or with carboxylic acids and not with an alkene
The dipole moment of chlorobenze is 1.5D and it's polarisabity vo
Discuss the basicity of pyridine
