尿素的水解反应如下:CO(NH2)2+H2Orarr;2NH3+CO2 无酶存在时反应的活化能为120kJmiddot;mol-1。当尿素酶存在时,反应的活化能降为46kJmiddot;mol-1。设有、无酶存在时反应的频率因子A值相同。 试计算: (1)在298K时,由于尿素酶的催化作用,反应速率是无酶存在时的多少倍? (2)无酶存在时,温度要升高到...
4NH3 + 5O2 rarr 4NO + 6H2O Given: Ammonia used in the reaction = 100 cm^3 From the equation, 4 vol. of NH3 requires 5 vol. of O2 for its oxidation. :. 1 vol. will require = 5/4 Thus 100 cm^3 of ammonia will require =5/4 xx 100 = 125 cm^3 of o
4NH3(g)+7O2(g) → 4NO2(g)+6H2O(l) Calculate the volumes of ammonia and oxygen required to produce 28 moles of nitrogen dioxide. What is the mass of nitrogen dioxide produced if the yield is 88%? Using the oxidation of ammonia equation, 4NH3(g)...
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Use the standard reaction enthalpies given below to determine Delta H degrees rxn for the following reaction: 2 NO(g) + O2(g) ? 2 NO2(g) Delta H degrees rxn=? Given: N2(g)+O2(g)? 2 NO(g) Delta H degre The enthalpy ...
5. Conclusions The addition of SSP reduced the maximum temperature during composting but had no negative effect on the quality of compost, and the addition of SSP increased the total nutrient content at the end of composting. The emission of NH3 in the composting process was mainly concentrated ...
NO conversion was calculated according to the following equations: NO Conversion (%) = [NO]in − [NO]out [NO]in × 100% (1) N2 Selectivity (%) = (1 − [NO]in − 2[N2O]out [NO]out + [N H3]in − [N H3]out ) × 100% (2) In order to comprehend the intrinsic ...