El tratamiento con distintos disolventes ayuda a determinar la naturaleza de la muestra. Si al tratarla con ácido clorhídrico se observa desprendimiento de CO 2 , o de H 2 S, o de SO 2 o de HCN que aniones involucraría tener presentes en la muestra? ¿Qué cationes pueden precipitar con los cloruros? ¿Qué me indica la presencia de NO 2 si utilizamos ácido nítrico?

Suppose a pair of chemical compounds a and b can react in two different ways: a + b -> c reaction 1 gives product c. a + b -> d reaction 2 gives product d. the following facts are known about the two reactions: . reaction 1 is endothermic and reaction 2 is exothermic. if a reaction vessel is charged (filled) with a and b , then at first d is produced faster than c. use these facts to sketch a qualitative reaction energy diagram for both reactions. note: because these sketches are only qualitative, the energies don? t have to be exact. they only have to have the right relationship to each other. for example, if one energy is less than another, that fact should be clear in your sketch.