Calculate the molarity of the acetic acid in vinegar, if a 500ml sample of the vinegar requires 43.50 ml of 0.105 M NaOH to reach a phenolphthalein endpoint in a titration. What is the indicator in the titration with permanganate solution?
PHmeter,tweezers,measuringcylinder,glassrod,etc Solutesolvent:analysisofpureNaCl(lessthan0.3%),deionizedwater,sodiumbicarbonatesolution,aceticacid Teststeps: (1)samplepreparation: 1)samplequantity:accordingtothe
Spray the solution on the soil, and make sure you cover every part. Does sterilizing soil remove nutrients? It is possible to sterilize soil with the sun and not kill the all-important beneficial microbes. No – it won't be an instant fix. ... The sun can speed up the process of co...
Acetic acid HFE7500 oil with 2% surfactant Droplet breaking solution Need to makemicrofluidic droplets?Make it easier with our droplet generation pack! Alginate beads production: Step by step method Step 1: Solutions preparation Tank 1: Alginate & Calcium...
4, to paint stains: while the first kerosene repeatedly rub the wet paint, then rubbed some dilute acetic acid (dilute acetic acid can not only effect, less), finally after washing, can be removed. Dry stains are difficult to remove paint, can be placed in the solution dirty place with ...
We pickle things for two reasons: to preserve them, and to make them more (or differently) delicious. The basic principle of pickling mushrooms is to cook them in an acidic solution. After pickling they can either be stored in their pickling solution, or in oil. This post focuses on using...
Another method isto use vinegar to kill mold. Vinegar's acetic acid makes it a powerful mold-killer. In a spray bottle, create a solution of equal parts water and white vinegar. Generously mist the moldy area, then let it sit for 15-20 minutes before wiping clean. ...
Show how you could make the acid shown below starting with any alcohol: Using the carboxylic acid below as your only carbon source, how would you make the given amide? Give a detailed, stepwise mechanism for the Fischer esterification of acetic ac...
Calculate the pH of a solution made by dissolving 16.5 g of potassium acetate in 150 mL of solution. (The Ka of acetic acid is 1.8 x 10-5.) A buffer solution is made by adding 0.4 mol of acetic acid and 0.2 mol of sodium acetate to enough water to make 1L of solution. Determine...
These inks are sneakier because you have to know how to reveal them. Most of them work using pH indicators, so when in doubt, paint or spray a suspected message with a base (such as sodium carbonate solution) or an acid (such as lemon juice). Some of these inks will reveal their mes...