Chapter 9, Problem 26P

(a)

Interpretation Introduction

Interpretation: The balanced chemical equation for the reaction of aluminum and hydrochloric acid to produce hydrogen needs to be determined.

Concept Introduction:A chemical equation for a reaction is said to be a balanced chemical equation if there are equal number of same atoms present in both sides of the reaction arrow.

(b)

Interpretation Introduction

Interpretation: The mass of pure aluminum needs to be determined for given volume, pressure and temperature.

Concept Introduction:An ideal gas equation is represented as follows:

  $PV=nRT$

Here, P is pressure, V is volume, n is number of moles, R is Universal gas constant and T is temperature.

The relation between mass and number of moles of a substance is as follows:

  $m=n\times M$

Here, M is molar mass of the substance.