Zinc Reacting with Hydrochloric Acid: STP Conditions

[chawki]

Homework Statement

Base metal zinc (Zn) reacts with concentrated hydrochloric acid (HCl) forming gaseous hydrogen and zinc chloride.
STP conditions: pressure p = 101,3 kPa , temperature t = 0C.
The equation of state for ideal gas: pV = nRT
R = 8,314 J /(mol K)

Homework Equations

Write down the chemical reaction formula and calculate the volume of the gaseous hydrogen (H₂) formed at STP conditions when 5,00 g of zinc reacts completely.

The Attempt at a Solution

2 HCl + Zn -----> ZnCl₂ + H₂
5g-----------------m_H2
65.41g------------2g
m_H2=10/65.41=0.152g.
n_H2=m_H2/M_H2=0.152/2=0.076mol

PV=nRT
V=nRT/P
V=(0.076*8.314*273.15)/101300
V=1.703*10e-³ m³
V=1.703L.

 

[Borek]

Looks correct. Pay attention to significant figures. Not that they matter much, but they are being checked.