Na reação abaixo, foram utilizados como reagentes 100 g de ácido (aq) 140 g de base (s): Fe(OH) 3 + HCN → (Pesos atômicos: Fe= 56; O= 16; H= 1; C= 12; N= 14)

a) Que massa do reagente em excesso sobrará?
b) Qual a massa de sal que será produzida?
c) Qual o volume de vapor de água que será produzido, nas CNTP?
d) Supondo que a reação ocorra à pressão de 1 atmosfera e na temperatura de 207º.C; que volume o vapor de
água terá?

Nconcentration refers to the molar concentration of an ion in solution. it may be identical to, or greater or less than, the molar concentration of the compound containing the ion that was used to make the solution. for soluble salts, the molarity of a particular ion is equal to the molarity of that compound times the subscript for that ion. for example, 1 m of alcl3 is 1 m in al3+ and 3 m in cl−. 1 m of (nh4)2so4 is 2 m in nh4+ and 1 m in so42−. part a what is the concentration of k+ in 0.15 m of k2s? view available hint(s) nothing m m part b if cacl2 is dissolved in water, what can be said about the concentration of the ca2+ ion? view available hint(s) if is dissolved in water, what can be said about the concentration of the ion? it has the same concentration as the cl− ion. its concentration is half that of the cl− ion. its concentration is twice that of the cl− ion. its concentration is one-third that of the cl− ion. part c a scientist wants to make a solution of tribasic sodium phosphate, na3po4, for a laboratory experiment. how many grams of na3po4 will be needed to produce 550 ml of a solution that has a concentration of na+ ions of 0.700 m ? express your answer numerically in grams. view available hint(s) mass of na3po4 n a 3 p o 4 = nothing g provide feedback