Q1: A 4.00-wt% aqueous sulfuric acid solution (p = 1.03 g/ml) flows through a 50-m long pipe with a 7.0 cm diameter at a rate of 77 L/min. (a) What is the molarity of sulfuric acid in the solution? (b) How long (in seconds) would it take to fill a 55-gallon drum, and how much sulfuric acid (lbm) would the drum contain? (You should arrive at your answers with two dimensional equations). (c) The mean velocity of a fluid in a pipe equals the volumetric flow rate divided by the cross-sectional area normal to the direction of flow. Use this information to estimate how long (in seconds) it takes the solution to flow from the pipe inlet to the outlet.
Q1: A 4.00-wt% aqueous sulfuric acid solution (p = 1.03 g/ml) flows through a 50-m long pipe with a 7.0 cm diameter at a rate of 77 L/min. (a) What is the molarity of sulfuric acid in the solution? (b) How long (in seconds) would it take to fill a 55-gallon drum, and how much sulfuric acid (lbm) would the drum contain? (You should arrive at your answers with two dimensional equations). (c) The mean velocity of a fluid in a pipe equals the volumetric flow rate divided by the cross-sectional area normal to the direction of flow. Use this information to estimate how long (in seconds) it takes the solution to flow from the pipe inlet to the outlet.
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:Q1: A 4.00-wt% aqueous sulfuric acid solution (p = 1.03 g/ml) flows through a 50-m long
pipe with a 7.0 cm diameter at a rate of 77 L/min.
(a) What is the molarity of sulfuric acid in the solution?
(b) How long (in seconds) would it take to fill a 55-gallon drum, and how much sulfuric acid
(Ibm) would the drum contain? (You should arrive at your answers with two dimensional
equations).
(c) The mean velocity of a fluid in a pipe equals the volumetric flow rate divided by the
cross-sectional area normal to the direction of flow. Use this information to estimate how
long (in seconds) it takes the solution to flow from the pipe inlet to the outlet.
Q2: A mixture of ethanol (ethyl alcohol) and water contains 40.0% water by mass.
(a) Assuming volume additivity of the components, estimate the specific gravity of the
mixture at 20°C. What volume (in liters) of this mixture is required to provide 150 mol of
ethanol?
(b) Repeat Part (a) with the additional information that the specific gravity of the mixture at
20°C is 0.89045 (making it unnecessary to assume volume additivity). What percentage error
results from the volume-additivity assumption?
Q3: Three different liquids are used in the manometer shown
below.
(a) Derive an expression for P1 – P2 in terms p4, PB. Pc, hi, and
PA
-PB
h2.
(b) Suppose fluid is ethanol, B is water, and C is a manometer
fluid with a specific gravity of 1.37; pressure P2 = 145.2 kPa;
hi = 30.0 cm; and hz = 19.2 cm. Calculate P; (kPa).
Pc
Q4: A manometer is used to measure the pressure of a gas in a tank. The fluid used has a
specific gravity of 0.85, and the manometer column height is 55 cm, as shown in the Figure.
If the local atmospheric pressure is 96 kPa, determine the gage pressure in the tank, and the
absolute pressure.
= 96 kPa
atm
P = ?
h = 55 cm
SG = 0.85
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