Post$-$Laboratory Questions

Aluminum metal reacts with dilute sulfuric acid to produce aluminum sulfate and hydrogen gas.

a$.$ Write the balanced chemical reaction.

b$.$ What mass of aluminum will react with $25\mathrm{.}00mL$ of $0\mathrm{.}105M$ solution of sulfuric acid?

c$.$ What volume of hydrogen gas at STP do you expect to be produced by the complete reaction of the sulfuric acid?

An alloy is a metallic substance composed of a mixture of $2$ or more metal elements. You obtain a $50\mathrm{.}00mg$ sample of $Zn-$Al alloy with unknown $\%$ composition and analyze it using the technique we used today.

a$.$ If the barometric pressure in the lab is $754\mathrm{.}3mmHg$ and the temperature is $22C,$ what will the partial pressure of the hydrogen gas in the collection vessel be$?$

b$.$ Calculate the moles of hydrogen gas formed if $35\mathrm{.}10mL$ of hydrogen was measured in the collection vessel.