Heartburn is caused when acid from the stomach rises up into the esophagus, which is the tube leading from the mouth to the stomach. To relieve the discomfort of heartburn people will consume an antacid like Tums. Design and carry out an experiment to test the pH of Tums and its effect on the pH of a known acidic solution when they are mixed. You can use all of the materials listed above to carry out this additional experiment. Design a procedure, and carry it out to complete the investigation.
Record your observations and discuss whether or not they were what you expected. Save my name, email, and website in this browser for the next time I comment. This site uses Akismet to reduce spam. Learn how your comment data is processed. Measuring pH with Litmus Paper. What color will blue litmus paper turn if it is dipped into a solution with a pH of 3?
What color will blue litmus paper turn if dipped into a solution with a pH of 9? What color will red litmus paper turn if dipped into a solution with a pH of 2? What color will red litmus paper turn if dipped into a solution with a pH of 10?
Litmus can be found in different species of lichens. The dyes are extracted from such species as Roccella tinctoria South America , Roccella fuciformis Angola and Madagascar , Roccella pygmaea Algeria , Roccella phycopsis , Lecanora tartarea Norway, Sweden , Variolaria dealbata , Ochrolechia parella , Parmotrema tinctorum , and Parmelia. Currently, the main sources are Roccella montagnei Mozambique and Dendrographa leucophoea California.
The main use of litmus is to test whether a solution is acidic or basic. Wet litmus paper can also be used to test for water-soluble gases that affect acidity or alkalinity ; the gas dissolves in the water and the resulting solution colors the litmus paper. For instance, ammonia gas, which is alkaline, turn the red litmus paper blue. Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic or alkaline conditions, with the color change occurring over the pH range 4.
Neutral litmus paper is purple. Under acidic conditions, the solution is red, and under basic conditions, the solution is blue. Chemical reactions other than acid-base can also cause a color change to litmus paper. This article was written by the Sciencing team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.
To submit your questions or ideas, or to simply learn more about Sciencing, contact us here. By Mallory Malesky; Updated April 29, References University of Wisconsin: Depending on which text editor you're pasting into, you might have to add the italics to the site name. Methods for Testing PH of Liquids. How to Read an Indicator Color Chart.
Measuring pH with litmus paper can be a fun, easy way to introduce acids, bases and the pH scale. Try this litmus paper experiment using household items.
Both Litmus paper and pH strips are small strips of paper coated with a chemical substance that will undergo a reaction when it comes in contact with the liquid being tested. Litmus paper comes in two colors: red or blue. Red Litmus paper turns blue if it comes in contact with a base, alternatively blue litmus paper turns red with acids.
pH is a scale, which can be used to measure the acidity or basicity in a solution. The scale has numbers from 1 to pH 7 is considered as a neutral value. Pure water is said to be having pH 7. A pH scale reading of 2 indicates a strong acid. A pH scale reading of 13 indicates a strong base. A pH scale reading of 6 indicates a weak acid. A pH scale reading of 8 indicates a weak base. Litmus Indicator. Acids turn blue litmus paper red. Bases turn red litmus paper blue. Examples of Litmus Paper Color Changes. Sulfuric acid is obviously acidic in nature. It turns blue litmus paper red.
Litmus and universal indicator are two indicators that are commonly used in the laboratory. Litmus. Litmus indicator solution turns red in acidic solutions and blue in alkaline solutions. It turns purple in neutral solutions. Litmus paper. is usually more reliable, and comes as red litmus paper and blue litmus paper. The table shows the colour changes it can make. The pH scale and its colors can tell you whether or not a tested object is acidic, alkaline, What Do the Colors Indicate on a pH Test Strip Paper? By Carolyn Robbins; Updated April 30, Litmus paper comes in two colors. Red litmus paper turns blue when exposed to a base.