Answer to Question #114841 in General Chemistry for maria

Question #114841

Zn(s)+2 HCl(aq)-->ZnCl2(aq)+H2(g)
The three flasks each contain 0.350 mol of HCl. Zinc is added to each flask in the following quantities: 5.72g, 11.4g, 22.9 g. When the reactants are combined, the H2 inflates the balloon attached to the flask. The results are as follows:

Flask 1: Balloon inflates completely, but some Zn remains when inflation ceases.

Flask 2: Balloon inflates completely. No Zn remains.

Flask 3: Balloon does not inflate completely. No Zn remains.

What mass of Zn was added to each flask?
Mass (flask 1)=_____g
Mass(flask 2)=______g
Mass(flask 3)=______g

Expert's answer

1. 5.72.

2. 11.4.

3. 22.9.