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PROPUNERI LICENłĂ 2010 - Babes - Universitatea de Medicina si ...

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Raspuns: C ([9] pag. 514)<br />

II.40 Ce contine reactivul Karl Fischer, folo<strong>si</strong>t pentru <strong>de</strong>terminarea cantitativa a<br />

apei<br />

A. Dioxid <strong>de</strong> sulf, iod <strong>si</strong> piridina in etanol absolut<br />

B. Dioxid <strong>de</strong> sulf, formal<strong>de</strong>hida <strong>si</strong> piridina in metanol<br />

C. Iod, dioxid <strong>de</strong> sulf <strong>si</strong> dioxan in metanol<br />

D. Dioxid <strong>de</strong> sulf, iod <strong>si</strong> piridina in metanol absolut<br />

E. Piridina, cloroform, dioxid <strong>de</strong> carbon, iod<br />

Raspuns: D ([9] pag. 1185)<br />

II.41 In ce conditii pot fi titrate sarurile <strong>de</strong> Ca(II) complexonometric<br />

A. pH 9 in prezenta murexidului<br />

B. pH 6 in prezenta eriocrom T<br />

C. pH 10 in prezenta eriocrom T <strong>si</strong> a e<strong>de</strong>tatului <strong>de</strong> magneziu<br />

D. pH 5 - 6 in prezenta xilenoloranjului<br />

E. pH 2 in prezenta murexidului<br />

Raspuns: C ([9] pag. 178])<br />

II.42 Clorhidratii bazelor medicamentoase se dozeaza<br />

A. cu acid percloric in acid acetic<br />

B. cu acid percloric in acid acetic, dupa tratarea prealabilacu acetat <strong>de</strong> mercur (II)<br />

pentru a bloca anionii clorura<br />

C. cu acid percloric in acid acetic, dupa tratarea prealabila cu azotat <strong>de</strong> argint<br />

pentru a bloca anionii clorura<br />

D. argentometric<br />

E. cu acid sulfuric<br />

Raspuns: B ([9] pag. 221,226)<br />

II.43 Cantitatea <strong>de</strong> 0,2464 g MgSO4 x 7H2O se dizolva in 100 mL apa <strong>si</strong> se adauga<br />

5 mL tampon amoniacal cu pH = 10, indicator eriocromT <strong>si</strong> se titreaza cu 20 mL<br />

Complexon (III) 0,05 mol/l pana la coloratie albastra ( F=1 ).1 mL EDTA-N 0,05<br />

M corespun<strong>de</strong> la 0,01232 g MgSO4x7H2O.Puritatea sulfatului <strong>de</strong> magneziu este:<br />

A. 99%<br />

B. 98,5%<br />

C. 93%<br />

D. 101%<br />

E. 100%<br />

Raspuns: E ([9] pag. 608)<br />

355

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