Doing a project on putting litmus paper into "polluted" water
2006-11-09 13:30:16 · 9 answers · asked by Wei H 2 in Science & Mathematics ➔ Chemistry
Use an eyedropper drip as small as an amount as you can onto the paper.
2006-11-09 13:32:28 · answer #1 · answered by Anonymous · 1⤊ 0⤋
The most important part after you dip the paper in the water is: It turns powder blue in alkali (pH more than 7) or pink in acid (pH less than 7). The pale colors make litmus a poor indicator, but it's great to detect the upside or downside of pH=7. Phenolphthalein only turns at pH=8. Others below pH=7.
2006-11-09 13:37:20 · answer #2 · answered by steve_geo1 7 · 0⤊ 0⤋
Ph paper is better that litmus paper. The ph paper has various shades of colors and therefor it can give a range instead of acidic or basic
2006-11-09 13:49:22 · answer #3 · answered by n_hall_22 3 · 0⤊ 0⤋
You use litmus paper to see if you have an acidic or basic substance. Just dip it and take it out inmediatly. Sometimes, if the substance is really strong with only its vapor the color changes. Red for acid-Blue for base.
2006-11-09 13:41:48 · answer #4 · answered by Anonymous · 0⤊ 0⤋
You just dip the limus paper in for a split second (dont hold, just in, out) and then check the color right away and record the results. The colors change if you let it sit. and you wont get quite as accurate of a result
if it is a solid you will have to dissolve it in NEUTRAL water, and if it is a colloid, then you should probably get it in water and stir it up as best as possible and then quickly dip before it settles out.
2006-11-09 13:31:59 · answer #5 · answered by Anonymous · 1⤊ 0⤋
Most of the previous answers may make you confuse. My answer will even make you more confuse if you do not have good background on Acid - Base and Acidity - Basicity Concept. C5H5N is Pyridine ( A Weak Base ) [ C5H5NH+ ] is Pyridinium Ion ---- [ Conjugate Acid of Pyridine ] C9H7N is Quinoline ( A Base ; But Stronger than Pyridine ) [ C9H7NH+ ] is Quinolinium Ion ---- [ Conjugate Acid of Quinoline ] Compare between two Bases : For the Stronger Base ---- Its Conjugate Acid will be Weaker Acid ( and vice versa ) Quinoline is a Stronger Base ---- Its Conjugate Acid ( Quinolinium ion ) will be a Weaker Acid Pyridine is a Weaker Base ---- Its Conjugate Acid ( Pyridinium ion ) will be a Stronger Acid Compare between two Acids : For the Stronger Acid ---- Its Conjugate Base will be Weaker Base ( and vice versa )
2016-05-22 01:46:43 · answer #6 · answered by ? 4 · 0⤊ 0⤋
Dip in or put a few drops on the paper.
2006-11-09 13:45:05 · answer #7 · answered by Dr. J. 6 · 0⤊ 0⤋
to test if it is more of a base or an acid
2006-11-09 13:31:25 · answer #8 · answered by disaintnofunkyreggaeparty 1 · 0⤊ 1⤋
same way
2006-11-09 13:37:37 · answer #9 · answered by goodtimesgladly 5 · 0⤊ 0⤋