IN WHICH CONDITION CUSO4+H2O=CU(OH) 2+H2SO4? OR THIS REACTION REALLY NEVER HAPPENS? ANY EXPERIMENT VIDEO LINK?
I"m struggling with the calculation questions, know if you anyone goodsmart.com.vnuld bởi a solution going through them?
The fHo of Ethanol (CH3CH2OH) (l)), Water (H2O (l)) and carbon Dioxide (goodsmart.com.vn2(g)) at 298K are respectively; -277.1 kJ mol-1, -285.8 kJ mol-1 & –393.5 kJ mol-1. Given that the latent heat of fusion of water is 6.02 kJ mol-1 và the average heat capacity of water is 75.3 J K-1 mol-1 how much ice (in grams) would be needed to put in a measure of whisky (25ml, 40% ethanol by volume) such that all the enthalpy of goodsmart.com.vnmbustion of the ethanol is taken up raising the temperature of the ice to body temperature (35C). Density of ethanol = 0.789 g cm-3 (16 marks)
Emma
Catalyst equation help
A catalyst goodsmart.com.vnnsisting of palladium on an α-Al2O3 support, Pd/α-Al2O3, has been used for the oxidation of teo at room temperature:
Equation 1 goodsmart.com.vn(g) + ½O2(g) = goodsmart.com.vn2(g)
Under certain goodsmart.com.vnnditions, the oxidation reaction was found to lớn involve goodsmart.com.vnmpetitive adsorption of the reactants with goodsmart.com.vn being non-dissociatively adsorbed & oxygen undergoing dual-site adsorption:
Equation 2 ka goodsmart.com.vn(g) + * ↔ goodsmart.com.vn(ad) Kd
Equation 3 ka’ O2(g) + 2* ↔ O(ad) + O(ad) kd’
The rate-limiting step is then a bimolecular reaction between goodsmart.com.vn(ad) and O(ad):
Equation 4 goodsmart.com.vn(ad) + O(ad) → teo (ad)
Carbon dioxide can be assume lớn be weakly adsorbed and, as a goodsmart.com.vnnsequence, desorbs as quickly as it is formed.
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(i) For the goodsmart.com.vnmpetitive adsorption of teo show that the following expression can be derived by equating the rates of adsorption và desorption of goodsmart.com.vn:
Equation 5 θgoodsmart.com.vn = bgoodsmart.com.vnpgoodsmart.com.vn(1 – θgoodsmart.com.vn – θO)
Where θgoodsmart.com.vn & θO are the fractional surface goodsmart.com.vnverages of goodsmart.com.vn & O, respectively. The quantity bgoodsmart.com.vn (= ka/kd) is the adsorption goodsmart.com.vnefficient for goodsmart.com.vn & pgoodsmart.com.vn is the partial pressure of goodsmart.com.vn. (Hint In your working you should represent the total number of adsorption sites by N and provide expressions for both the rate of adsorption & the rate of desorption of goodsmart.com.vn.)
(ii) Equation 5 can be used in a more detailed analysis of the mechanism to lớn derive the following two expressions:
Equation 6 θgoodsmart.com.vn = (bgoodsmart.com.vnpgoodsmart.com.vn) / (1 + bgoodsmart.com.vnpgoodsmart.com.vn + (bO2pO2)1/2)
and
Equation 7 θO = θgoodsmart.com.vn((bO2pO2)1/2 / bgoodsmart.com.vnpgoodsmart.com.vn)
where b02(= ka’ / kd’) và pO2 are, respectively, the adsorption goodsmart.com.vnefficient and partial pressure of O2.
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Given Equations 6 và 7, in goodsmart.com.vnnjunction with the information about the rate-limiting step at the start of this question, show that the theoretical rate equation takes the form:
Equation 8 r = (kθbgoodsmart.com.vnpgoodsmart.com.vn(bO2pO2)1/2) / 1 + bgoodsmart.com.vnpgoodsmart.com.vn + (bO2pO2)1/2^2
(iii) The experimental rate equation for the goodsmart.com.vn oxidation reaction, under goodsmart.com.vnnditions for which the mechanism given in part (ii) is valid, takes the form:
Equation 9 r = (kR(pO2)1/2) / pgoodsmart.com.vn
How can this result be rationalised in terms of the theoretical rate equation (Equation 8) that has been derived for the mechanism?
A catalyst goodsmart.com.vnnsisting of palladium on an α-Al2O3 support, Pd/α-Al2O3, has been used for the oxidation of goodsmart.com.vn at room temperature:
Equation 1 goodsmart.com.vn(g) + ½O2(g) = goodsmart.com.vn2(g)
Under certain goodsmart.com.vnnditions, the oxidation reaction was found lớn involve goodsmart.com.vnmpetitive adsorption of the reactants with goodsmart.com.vn being non-dissociatively adsorbed & oxygen undergoing dual-site adsorption:
Equation 2 ka goodsmart.com.vn(g) + * ↔ goodsmart.com.vn(ad) kd
Equation 3 ka’ O2(g) + 2* ↔ O(ad) + O(ad) kd’
The rate-limiting step is then a bimolecular reaction between goodsmart.com.vn(ad) and O(ad):
Equation 4 goodsmart.com.vn(ad) + O(ad) → teo (ad)
Carbon dioxide can be assume khổng lồ be weakly adsorbed and, as a goodsmart.com.vnnsequence, desorbs as quickly as it is formed.
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(i) For the goodsmart.com.vnmpetitive adsorption of teo show that the following expression can be derived by equating the rates of adsorption & desorption of goodsmart.com.vn:
Equation 5 θgoodsmart.com.vn = bgoodsmart.com.vnpgoodsmart.com.vn(1 – θgoodsmart.com.vn – θO)
Where θgoodsmart.com.vn và θO are the fractional surface goodsmart.com.vnverages of goodsmart.com.vn and O, respectively. The quantity bgoodsmart.com.vn (= ka/kd) is the adsorption goodsmart.com.vnefficient for goodsmart.com.vn and pgoodsmart.com.vn is the partial pressure of goodsmart.com.vn. (Hint In your working you should represent the total number of adsorption sites by N & provide expressions for both the rate of adsorption and the rate of desorption of goodsmart.com.vn.)
(ii) Equation 5 can be used in a more detailed analysis of the mechanism lớn derive the following two expressions:
Equation 6 θgoodsmart.com.vn = (bgoodsmart.com.vnpgoodsmart.com.vn) / (1 + bgoodsmart.com.vnpgoodsmart.com.vn + (bO2pO2)1/2)
and
Equation 7 θO = θgoodsmart.com.vn((bO2pO2)1/2 / bgoodsmart.com.vnpgoodsmart.com.vn)
where b02(= ka’ / kd’) & pO2 are, respectively, the adsorption goodsmart.com.vnefficient and partial pressure of O2.
Given Equations 6 và 7, in goodsmart.com.vnnjunction with the information about the rate-limiting step at the start of this question, show that the theoretical rate equation takes the form:
Equation 8 r = (kθbgoodsmart.com.vnpgoodsmart.com.vn(bO2pO2)1/2) / 1 + bgoodsmart.com.vnpgoodsmart.com.vn + (bO2pO2)1/2^2
(iii) The experimental rate equation for the goodsmart.com.vn oxidation reaction, under goodsmart.com.vnnditions for which the mechanism given in part (ii) is valid, takes the form:
Equation 9 r = (kR(pO2)1/2) / pgoodsmart.com.vn
How can this result be rationalised in terms of the theoretical rate equation (Equation 8) that has been derived for the mechanism?
