To predict the number of tin and oxide ions present in per unit cell of tin oxide. Concept introduction: The formula for tin oxide is SnO 2 . Tin has an oxidation number of + 4 in this compound. SnO 2 also known as, cassiterite is the main ore of tin. Tin oxides crystallizes in a rutile like unit cell in which Sn 4 + and O 2 − ions are present. The compound should be electrically neutral.
To predict the number of tin and oxide ions present in per unit cell of tin oxide. Concept introduction: The formula for tin oxide is SnO 2 . Tin has an oxidation number of + 4 in this compound. SnO 2 also known as, cassiterite is the main ore of tin. Tin oxides crystallizes in a rutile like unit cell in which Sn 4 + and O 2 − ions are present. The compound should be electrically neutral.
Solution Summary: The author explains the formula for tin oxide, which has an oxidation number of +4, and the equailibrium constant for this raction.
To predict the number of tin and oxide ions present in per unit cell of tin oxide.
Concept introduction:
The formula for tin oxide is SnO2. Tin has an oxidation number of +4 in this compound. SnO2 also known as, cassiterite is the main ore of tin.
Tin oxides crystallizes in a rutile like unit cell in which Sn4+ and O2− ions are present. The compound should be electrically neutral.
(b)
Interpretation Introduction
Interpretation:
Check whether it is thermodynamically feasible to transform solid SnO2 into liquid SnCl4 by reactionof the oxide with gaseous HCl or not. The equailibrium constant for this raction at 250C is to be determined.
Concept introduction:
The free energy change is expressed as,
ΔrG°=∑nΔfG°(products)−∑nΔfG°(reactants)
The positive value of ΔrG° indicates the thermodynamic unfeasibility of a reaction.
If the free energy change value is known then the equilibrium constant can be determined using the following equation.
5. A buffer consists of 0.45 M NH, and 0.25 M NH-CI (PK of NH 474) Calculate the pH of the butter. Ans: 9.52
BAS
PH-9.26 +10g (10.95))
14-4.59
PH=4.52
6. To 500 ml of the buffer on #5 a 0.20 g of sample of NaOH was added
a Write the net ionic equation for the reaction which occurs
b. Should the pH of the solution increase or decrease sightly?
Calculate the pH of the buffer after the addition Ans: 9.54
Explain the inductive effect (+I and -I) in benzene derivatives.
The inductive effect (+I and -I) in benzene derivatives, does it guide ortho, meta or para?
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell