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During an experiment, 78.0 grams of CH4 reacts with 102.0 grams of O2 to produce water and carbon dioxide (CO2).
CH4 + 2O2 ---> 2H2O + CO2
Mole Ratio: Molar Mass Ratio:
1 mol CH4 = 1 mol CO2 1 mol CH4 = 16.01 g CH4
1 mol CO2 = 44.01 g CO2
In this investigation, you will be given a sample of a weak monoprotic acid with an unknown concentration and a standardized 0.1M NaOH solution. You are to design and set up a lab for finding the Ka of the acid.
For the prelab your task is to develop a strategy for finding the Ka of this weak acid. Your Strategy must include the following:
· The chemical equation for the equilibrium system that will help you determine the Ka
· The equilibrium law expression for the above chemical system
· The algebra and an ICE table that you will use to calculate the Ka of this unknown acid
· List of main steps that you will follow to experimentally determine the Ka of this unknown acid
AgF(aq) + Fe(CO3)3(aq)
Which compound when dissolved in water will turn blue litmus paper red?
a. H2O (l)
b. BaCI2 (aq)
c. HClO (aq)
d. NH4OH (aq)
Calcium carbide (CaC2) reacts with water to produce acetylene (C2H2) and calcium hydroxide. If 5.50 mol calcium carbide reacts with an excess of water, how many moles of acetylene will be produced?
Why is Europe there so many ingredients banned than in the US, where there are only 11? And why do people think parabens are harmful?
A household bleach has a concentration of 460% (m/v) of sodium hypochlorite (NaOCl(aq)). What mass of sodium hypochlorite does a 2.84L jug of this bleach contain?
Whenever solid calcium hydroxide, Ca(OH)2 (commonly known as lime) is present in water, it dissolves according to the equation:
Ca(OH)2(s) ↔ Ca2+(aq) + 2OH-(aq)
until the rate of the backward reaction equals the rate of the forward reaction and the solution is saturated.
A CAPE Chemistry student sought to determine the solubility product, Ksp of calcium hydroxide by titrating saturated solution of Ca(OH)2 against standardized hydrochloric acid solution, HCl. The saturated Ca(OH)2 solution was filtered, to remove excess solute, and 25mL aliquots were titrated against 0.10M HCl solution using bromothymol blue indicator.
- Calculate the concentration of Calcium Hydroxide.
- Use the equilibrium expression for the dissolution of Ca(OH)2 to determine the concentration of Ca2+ and OH–
- Calculate the Ksp for calcium hydroxide (state the units).
A CAPE Chemistry student sought to determine the solubility product, Ksp of calcium hydroxide by titrating saturated solution of Ca(OH)2 against standardized hydrochloric acid solution, HCl. The saturated Ca(OH)2 solution was filtered, to remove excess solute, and 25mL aliquots were titrated against 0.10M HCl solution using bromothymol blue indicator.
Calculate the concentration of Calcium Hydroxide.
Use the equilibrium expression for the dissolution of Ca(OH)2 to determine the concentration of Ca2+ and OH–. [3]
Draw a structural formula for the alcohol formed by acid-catalyzed hydration of
each alkene:
(a) 2-Methyl-2-butene
(b) 2-Methyl-1-butene
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#339914 on Dec 2023