To find out how many grams of Zn should be reacted with excess of HCl to obtain this much gas. Concept introduction: The volume (V) which occupies by moles (n) for any gas which has the pressure (P) and temperature in kelvin (T). This was represented by the equation P V = n R T R is known as the ideal gas constant. This is stated as ideal gas law or equation of state. Given: Calculate the moles of H 2 required: PV=nRT P = pressure = 0 .9842 atm v = 0 .400 litres n = moles R = 0 .082057 T = 20 .5+273 = 293 .5

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2. Platinum and other group 10 metals often act as solid phase hydrogenation catalysts for unsaturated hydrocarbons such as propylene, CH3CHCH2. In order for the reaction to be catalyzed the propylene molecules must first adsorb onto the surface. In order to completely cover the surface of a piece of platinum that has an area of 1.50 cm² with propylene, a total of 3.45 x 10¹7 molecules are needed. Determine the mass of the propylene molecules that have been absorbed onto the platinum surface.

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Question

Chapter 5, Problem 5.49PAE

Interpretation Introduction

Interpretation:

To find out how many grams of Zn should be reacted with excess of HCl to obtain this much gas.

Concept introduction:

The volume (V) which occupies by moles (n) for any gas which has the pressure (P) and temperature in kelvin (T). This was represented by the equation

PV=nRT

R is known as the ideal gas constant. This is stated as ideal gas law or equation of state.

Given:

Calculate the moles of H2 required:PV=nRTP = pressure = 0.9842 atmv = 0.400 litresn = molesR = 0.082057T = 20.5+273 = 293.5

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