Concept explainers
(a)
Interpretation:
Estimate whether it is possible for the average gas-phase composition in the tank to be within the explosive limits at any time. Explain you answer.
Concept introduction:
The
Where, the volume (V) occupied by ‘n’ moles of any gas has a pressure (P) at temperature (T) in Kelvin and ‘R’ = Gas constant
(b)
Interpretation:
The temperature at which the gas tank to be at lower explosive limit should be determined.
Concept introduction:
The Ideal Gas Law is defined as,
Where, the volume (V) occupied by ‘n’ moles of any gas has a pressure (P) at temperature (T) in Kelvin and ‘R’ = Gas constant
Antoine equation
Antoine equations describe the relationship between vapor pressure and temperature for pure components. This is a semi-empirical relationship.
(c)
Interpretation:
Why is the tank purged thoroughly with steam after being drained should be explained.
Concept introduction:
The Ideal Gas Law is defined as,
Where, the volume (V) occupied by ‘n’ moles of any gas has a pressure (P) at temperature (T) in Kelvin and ‘R’ = Gas constant
Antoine equation
Antoine equations describe the relationship between vapor pressure and temperature for pure components. This is a semi-empirical relationship.
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Chapter 6 Solutions
EBK ELEMENTARY PRINCIPLES OF CHEMICAL P
- A pipet is used to transfer 5.00 mL of a 1.25 M stock solution in flask “S” to a 25.00-mL volumetric flask “B,” which is then diluted with DI H2O to the calibration mark. The solution is thoroughly mixed. Next, 3.00 mL of the solution in volumetric flask “A” is transferred by pipet to a 50.00-mL volumetric flask “B” and then diluted with DI H2O to the calibration mark. Calculate the molarity of the solution in volumetric flask “B.”arrow_forward6. When the ideal-gas reaction A+B=C+Dhas reached equilibrium, state whether or not each of the following relations must be true. Here n¡ is the number of moles of species i in equilibrium, P, is the partial pressure of i, and µ; is the chemical potential of i. Here a simple True or False answer is sufficient. (a) nc+np=nA +ng (b) Pc+Pp=PA+PB (c) na=ng (d) nc=na (e) If only A and B are present initially, then nc=np (f) Ha + HB= Hc+ Hp no matter what the initial composition. (g) If only A and B are present initially, then in equilibrium we must have nc # 0. (h) The equilibrium constant Kp(T)= PĄPB/(PcPp). (i) The value of –RT In Kp(T) = µE(T)+µ8(T)– H3(T) –- H§(T). ) The equilibrium constant is independent of the total pressure.arrow_forward3. (a) If 10.0 mL of H2SO4 (sp. Gr. 1.50, containing 48.7% of combined SO3 by weight) is diluted to 400 mL, what is the normality of the solution as an acid? (b) What volume of 6.00 M H2SO4 should be added to this in order to make the resulting mixture 1.00 N as an acid? FW's : H2SO4 = 98; SO3 = 80arrow_forward
- Unit 7A: RA--Chemical Reactions and Stoichiometry 15/20 answered Close Homework . Due in 4 hours Molten iron and carbon dioxide gas are products in the industrial iron making process which passes carbon monoxide through molten iron ore, Fe203, at 1500°C. Write a balanced chemical equation for the production of iron. Chem 7 8 9 H 4 6 1 2 3 mol y g mol-1 DI + || SHOWarrow_forwarda dilution is needed to prepare a standard of 10 mg Zn/L from 0.5g Zn/L. To carry out the dilution we have the following available bulb pipettes: 1ml,2ml,5ml,10ml,20ml and 25 ml and the following volumetric flask: 50ml,100ml,250ml,500ml. which bulb pipette and which corresponding volumetric flask you would choose to carry out the dilution?arrow_forwardb) Determine the standard enthalpy change and std. Gibbs free energy change of reaction at 400 k for the reaction СO(g) +2H2(g) — CHОН (g) At 298.15 K, AH.co (0)= -26.41 kcal/mol, AH AG.co (9)= -32.8079 kcal/mol, AG cH,oh(9)= -38.69 kcal/mol, °.CH20H(9)= -48.08 kcal/mol, The standard heat capacity of various components is given by, CO = a + bT + cT² + dT³, where C, is in cal/mol-K and T is in K b x10² с х105 d x10° Соmponent CH3OH а 4.55 2.186 -0.291 -1.92 CO 6.726 0.04 0.1283 -0.5307 H2 6.952 -0.0457 0.09563 -0.2079arrow_forward
- J R = 8.314 mol·K F = 96,485 mol AG = AG° + RT · In(Q) ΔΕ ΔΕ-).In(Q) Half Reaction (Note: All given as reduction) E° (V) 02 (g) + 4 H"(aq) + 4 e¯ → 2 H20 (1) 1.229 Z2 (s) + 2 e 2z° (aq) 0.426 (aq) + 3 е A (s) 0.292 2 H20 (1) + 2 e G2* (aq) + 2 e → H2 (g) + 2 OH¯ (aq) - 0.828 2+ G (s) - 1.245 M2+ (aq) + 2 e → M (s) - 1.893 A student constructs a voltaic electrochemical cell with two metal electrodes [metal G and metal A] in their respective aqueous nitrate solutions [G(NO3)2 and A(NO3)3]. Use this information, as well as the reduction potentials in the table above to complete each statement below. The number of electrons transferred per mole of reaction in this cell is.. Your answer should be a number with no units. Question 6 Diluting the half-cell solution will decrease the measured cell potential. o cathode O anodearrow_forward(C) Write applications of bio-diesel.arrow_forward12:06 A * A * ll 68%i Zoom v Leave • REC Breakout Rooms GROUP WORK An iron ore was analyzed by dissolving a 1.1324 g sample in concentrated HCI. The resulting solution was diluted with water and the iron (III) was precipitated as the hydrous oxide Fe,O3.xH,O by the addition of NH3. After filtration and washing, the residue was ignited at a high temperature to give 0.5394 g of pure Fe,03 (159.69g/mol). Calculate (a) % Fe (55.847g/mol) and (b) % Fe,04(231.54g/mol) in the sample. •. 28 Unmute Start Video Share Participants More IIarrow_forward
- 2b) What is the primary consideration?arrow_forwardTungsten is extracted from the mineral scheelite (CaWO4) by roasting it with natrite (Na2CO3) at a temperature of about 700 °C. This converts the CaWO4 to water soluble sodium tungstate (NazWO4). The solid product from the roaster (called "calcine") is transferred to a leacher. In the leacher chilled water is added to dissolve the NazWO4. The chilled water dissolves only the NazWO4 in the solid calcine. The scheelite that enters the roast is mixed with gypsum (CaSO4-2H2O). This stream is 85.2%w CaWO4 and 14.8%w CaSO4-2H2O. (%w means “percent-by-weight.") Four reactions take place during this process. In the roaster: 1: CaWO4 + Na2CO3 - NazWO4 + CaO + CO2 2: CaSO4•2H2O - CaSO4 + 2H2O In the leacher: 3: СаО + H2О —- Са(ОН)2 4: CaSO4 + 2H2O - CaSO4 2H2O The first reaction does not go to completion, all the other reactions do go to completion. For the conditions shown in the process diagram on the next page calculate the conversion of the CaWO4 in the roaster.arrow_forwardThe buildup of oxides of carbon in the atmosphere by the burning of fossil fuels is a driver for human's effect on the world's climate. A chemical solution to this buildup is the removal of these chemicals by reduction to reform småll organic molecules like alkanes and alkenes. Achemist was investigating the removal of carbon dioxide by the following reaction: 2 CO2(g) + 6 H2(8) + C2H5OH(g) + 3 H20(g) Species AfH (kJ mol-1) S(JK-mol1) CO2(g) H2(g) C2H5OH(g) -393.5 213.8 0.00 131.1 -277.4 159.9 H20(g) -241.8 188.8 Using the data from the table above, calculate the enthalpy change, ArH, and entropy change, ArS, for this reaction. Show your working.arrow_forward
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