Melissa Carrithers AP Chemistry period 6 2-11-15 Determination of Ka of Weak Acids Purpose: The purpose of this lab is to find the strength of weak acids by determining the equilibrium constants for their ionization reactions in water. Is to use their measured pH values to calculate the pKa for the two unknown weak acids thus determining their identities. Hypothesis: If we neutralize a solution that contains a weak acid by adding a strong base to the solution‚ then the ions will be isolated and
Free PH Sodium hydroxide Acid
sulfuric acid (H2SO4) to the potassium manganite solution. Potassium manganate (VII) solution is used as a standard solution for oxidation and during redox titration. Potassium manganate(VII) is a self-indicator so other indicators are not required. The manganite is reduced from +VII in MnO4- to +II in Mn2+. The sulfuric acid (H2SO4) reacts with the paper clip. By heating up the sulfuric acid the paper clip dissolves‚ and iron (II) ions are oxidized to iron (III) ions by potassium manganate (VII). When
Premium Recycling Paper Recyclable materials
various aspects of kinetics of three reactions. A. Reaction between lead nitrate (PbNO3) and potassium chromate (K2CrO4) solutions B. Reaction between potassium permanganate (KMnO4) and oxalate ion (C2O42-) C. Iodine clock reaction A. REACTION BETWEEN LEAD NITRATE AND POTASSIUM CHROMATE SOLUTIONS Lead nitrate reacts with potassium chromate to form yellow lead chromate precipitate and aqueous potassium nitrate. The formation of a yellow precipitate indicates the completion of the reaction. The
Premium Iodine Chemical reaction Chemical kinetics
1. Identify the foods in his diet that may be contributing to his hypekalemia. a. Foods that his in potassium in his diet and may contributing to his hyper kalemia include; potatoes‚ spinach‚ fruits‚ salt substitutes‚ and the bacon‚ possibly the butter on the toast 2. Which ECG changes would be typical for a patient such as this? b. QT wave is elongated 3. Formulate relevant nursing diagnosis for this patient based on the data provided. c. Risk for ineffective
Premium Blood Cardiology Nutrition
Chapter 6 Study Guide Fluids‚ Electrolytes‚ and Acid-Base balance Compartmental Distribution of Body Fluids 2/3 of the body’s water is contained in the ICF‚ the remaining 1/3 is in the ECF ICF fluid volume is regulated by proteins and other non-diffusible organic compounds in cells Interstitial fluids (IF) act as a transport vehicle for gasses‚ nutrients‚ wastes‚ and other materials 14%-16% of body weight Reservoir for maintenance of vascular volume; used during hemorrhage
Premium Blood Blood pressure Carbon dioxide
While conducting our experiment‚ we observed that potassium had a porminant reaction when it reacted with water‚ than the reaction of sodium with water. When looking at the core charge of sodium and potassium we see that their core charge is the same +1. Even though they have the same core charge‚ sodium has only three shells‚ and potassium has four shells‚ which means that potassium has more inner electrons‚ and its distance is greater. Due to potassium having more inner electrons causes for the attraction
Premium Electric charge Atom Electron
of potassium in their urine and wonders why. What would you tell her? 4. Why does potassium concentration rise in patients with acidosis? What is this called? What effects does it have? 3. Burn patients have damaged skin cells that are unable to prevent water loss. The kidneys help retain water by using the sodium-potassium pump. It pumps more sodium into the cells so that water can follow the movement of sodium and can be reabsorbed. Sodium ions are exchanged with potassium being
Premium PH Diabetes mellitus Blood
Channelopathy is a disease relating to dysfunctional ion channels. The most common ion channels involved include sodium‚ potassium‚ calcium and chloride. Ion channels are very important in the neuron. Every Ion channel has its own threshold that has to be reached for action potential to be detected. For example‚ if resting membrane potential of a neuron is -70 mV and sodium ions are added it would cause the voltage to drift toward -55mV because the equilibrium potential for sodium is +60 mV. However
Premium Neuron Chemistry Action potential
transported across the membrane by a carrier protein. Coupled transporters that move solutes in the same direction are called ___ Symporters Which of the following describes the concentration of ions when the cell is at rest? The concentration of potassium is higher inside the cell. Which of the following is the driving
Premium Diffusion Adenosine triphosphate Ion
channels open‚ increase of sodium INTO cell. Phase 1- sodium channels close‚ potassium channels close‚ decrease in potassium and sodium. Calcium channels open‚ increase of calcium into cell. Phase 2- Plateau phase‚ membrane still depolarized (contract). Potassium channels closed‚ L-type calcium channels stay open. Lasts 0.2 seconds/200 milliseconds. Phase 3- second set of potassium channels open‚ potassium decrease. Failing membrane potential cause calcium channels to close‚ calcium decrease
Premium Action potential