Discuss the following effect on the retention time (increase, decrease, remain the same or become zero) of a peak in a liquid chromatography: (i) (ii) (iii) (iv) Raising the column temperature, Decreasing the particle size of the column material (at constant pressure), Having bubble formed in the column, Increasing the column head pressure.

Q: 5. The production of ammonia from hydrogen and nitrogen has a Kp of 41. If the reaction what would…

A: We would use relation between Kp and Kc , which is given as :  Kp = Kc × (RT)∆n   Here , ∆n = Moles…

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A: Here we have to determine the mass of choline chloride and malic acid present in a 20 g mixture if…

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A: In this question, we have to solve both the parts.

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Q: Name the ions. Spelling counts. Na+: Mg2+: CIT:

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Q: Kp = 0.032 for the reaction N₂(g) + 3H₂(g) → 2NH3(g) at a certain temperature. Suppose it was found…

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Q: Br 6 b iv 200 a 150 4 PPM 100 PPM PPM 2 50 0 0 (b) Choose one (1) difference in chemical shift…

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Q: Elemental SS reacts with O2O2 to form SO3SO3 according to the reaction 2S+3O2→2SO3   What is the…

A: Given -&gt; 2S + 3O2 ---&gt; 2SO3 Weight of S = 7.43 gm

Q: Given the following thermochemical equations: H2 (g) + F2 (g) → 2HF (g) ΔH = -537 kJ C (s) + 2F2 (g)…

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Q: how would i get the the enthalpy change for this process?

A: From step-3, the enthalpy of reaction, ∆Horxn = - 4702.86 kJ  The required conversion factors from…

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Q: Let's use calorimetry to measure heats of reaction but this time let's have a limiting reactant.…

A: a.) Exothermic reaction is that in which heat is released and endothermic is that in which heat is…

Q: which of the following compounds is amphoteric?

A: Amphoteric compound is the one that can act both as an acid(proton donor) and base (proton…

Q: 28. The formation of organic compounds by the reaction of iron(II) sulfide with carbonic acid is…

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Q: 1. What is the relationship between the following two compounds? a.stereoisomers b.identical…

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Q: How much HCO2H is obtained by reacting 1.00 g FeS, 0.50 g H2S, and 0.50 g CO2 if the reaction…

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Q: Calculate the heat of reaction (in J). Round your answer to 3 significant digits. reaction - J X Ś

A: Given that Initial temperature = 21.0 °C Final Temperature = 34.3 °C Change in temperature = 34.3 °C…

Q: hould be worked at each point in this titration. Weak acid problem Weak base problem. Buffer problem…

A: We have to match the titration points with appropriate options

Q: Question 5 of 7 What quantity in moles of NaOH need to be added to 200.0 mL of a 0.200 M solution of…

A: Given -&gt; Volume of HF = 200.0 ml = 0.209 L (1L = 1000ml)  Molarity of HF = 0.200 M  pH = 4.30  Ka…

Q: How many significant figures are in the following? 20.300 cm 0.00201 m 250 cm 1 in = 2.5 cm 25…

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Q: 7. Find AH for the following reaction: C6H12O6 (s) 2 C₂H5OH (l) + 2 CO₂ (g) The standard enthalpies…

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Q: A chemical engineer is studying the two reactions shown in the table below. In each case, she fills…

A: Here we are required to find gibbs free energy For the given reaction.

Q: Non-conjugated β,γ-unsaturated ketones, such as 3-cyclohexenone, as in acid-catalysed equilibrium…

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Q: 3. Assume that 2.1429 g of Cr(NO3)3 is dissolved in enough water to make 50.00 mL of solution. (a)…

A: Molarity :    Molarity is one of the unit of concentration. It is defined as the number of moles of…

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Q: Which statement correctly describes the reaction between silicon (Si) and nitrogen (N₂) shown below?…

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Q: K, for phenol (a weak acid), C6H5OH, is 1.60×10-10 K, for formic acid, HCOOH, is 1.80×10-4. K, for…

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Q: Using symbols □ for S atoms, and ○ for O atoms, draw the simplest representation of reactant and…

A: Following representation observed:-

Q: Calculate the percent experimental atom economy (%EAE) and comment. %EAE =5

A: Mass of one reactant i.e 1,4-dimethoxybenzene, m1 = 0.122 g Mass of another reactant i.e t-butyl…

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Q: calculate the ionization energy for a hydrogen like atom with one electron and Z=5 from the ground…

A: Z = 5 Number of electrons (n)=1

Q: Consider As and Br. Which would have a higher effective nuclear charge and why? O O Arsenic (As)…

A: Effective nuclear charge is the nucleus attraction on the valence electron. Which indicates that how…

Q: ucrose (table sugar) has a molar mass of 342.30 g/mole. How many sucrose molecules are in a…

A: Mole is equal to weight of substance divide by it's molar mass

Q: Which one of the following should have the highest boiling point? O 02 O Cl2 OH₂ ON2 O Br2 wost…

A: Boiling point depends on following factor's:- Pressure, chain length , impurities, force of…

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A: (1)identify what is the longest carbon chain  (2)identify the functional group in given question…

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Q: 2. Consider the molar solubility of MX₂ to be 2 X 10-3, calculate the KSP

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Q: 10 Na (s) + 2 KNO3 (s) → K₂0 (s) + 5 Na₂O (s) + N₂ (g) AH = -1457.20 kJ • Calculate the overall…

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Q: Ca(NO3)2 (aq) + Na₂CO3 (aq) → CaCO3 (s) + 2NaNO3(aq)

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Q: Accurately using a pipette is a skill you have gained in Chemistry 1. Select all correct statements…

A: option a is incorrect because if small amount of liquid remaining in the pipette would be blown, it…

Q: 9. Sketch a titration curve for the following types of tirations (with the base as the titrant).…

A: The nature of the curves and position of equivalence point for the titration of acids and bases…

Q: The neutralization reaction of HCIO4 (strong acid) with NaOH is given below. HCIO4 (aq) + NaOH(aq) -…

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Q: Gaseous ethane CH3CH3 reacts with gaseous oxygen gas O2 to produce gaseous carbon dioxide CO2 and…

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Q: 4. Dr. Dahm has 15.0 grams of Fe that he places into 150 mL of 8 M HNO₂ (aq). The reaction is done…

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