324025
A compound with molecular mass 180 is acylated with \({\mathrm{\mathrm{CH}_{3} \mathrm{COCl}}}\) to get a compound with molecular mass 390 . One half of number of amino groups present per molecule of the former compound is ____ .
1 0.4
2 2.5
3 1.5
4 3
Explanation:
Each group increases the molecular mass by 42. Total increase in molecular mass \({\mathrm{=390-180=210}}\) Number of \({\mathrm{\mathrm{NH}_{2}}}\) groups \({\mathrm{=\dfrac{210}{45}=5}}\) \(\,\,\,\,\,\,\,\,\,\,\)\(\dfrac{5}{2}=2.50\)
324025
A compound with molecular mass 180 is acylated with \({\mathrm{\mathrm{CH}_{3} \mathrm{COCl}}}\) to get a compound with molecular mass 390 . One half of number of amino groups present per molecule of the former compound is ____ .
1 0.4
2 2.5
3 1.5
4 3
Explanation:
Each group increases the molecular mass by 42. Total increase in molecular mass \({\mathrm{=390-180=210}}\) Number of \({\mathrm{\mathrm{NH}_{2}}}\) groups \({\mathrm{=\dfrac{210}{45}=5}}\) \(\,\,\,\,\,\,\,\,\,\,\)\(\dfrac{5}{2}=2.50\)
324025
A compound with molecular mass 180 is acylated with \({\mathrm{\mathrm{CH}_{3} \mathrm{COCl}}}\) to get a compound with molecular mass 390 . One half of number of amino groups present per molecule of the former compound is ____ .
1 0.4
2 2.5
3 1.5
4 3
Explanation:
Each group increases the molecular mass by 42. Total increase in molecular mass \({\mathrm{=390-180=210}}\) Number of \({\mathrm{\mathrm{NH}_{2}}}\) groups \({\mathrm{=\dfrac{210}{45}=5}}\) \(\,\,\,\,\,\,\,\,\,\,\)\(\dfrac{5}{2}=2.50\)
324025
A compound with molecular mass 180 is acylated with \({\mathrm{\mathrm{CH}_{3} \mathrm{COCl}}}\) to get a compound with molecular mass 390 . One half of number of amino groups present per molecule of the former compound is ____ .
1 0.4
2 2.5
3 1.5
4 3
Explanation:
Each group increases the molecular mass by 42. Total increase in molecular mass \({\mathrm{=390-180=210}}\) Number of \({\mathrm{\mathrm{NH}_{2}}}\) groups \({\mathrm{=\dfrac{210}{45}=5}}\) \(\,\,\,\,\,\,\,\,\,\,\)\(\dfrac{5}{2}=2.50\)
