English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

Cheryl dissolves an unknown gaseous substance in water and tests the solution for various properties. The results of her test are summarized below:

Test:
1. Use analog volt-ohm-meter (VOM) to check for electrical conductivity
2. Test for reaction with magnesium metal
3. Test solution with litmus paper

Results:
1. high electrical conductivity
2. vigorous exothermic reaction with Mg; hydrogen gas forms
3. blue litmus paper turns red

question:
Judging from the result of Cheryl's litmus test, is the solution acidic, basic, or neutral? Explain your answer.

2007-03-10 10:36:26 · 4 answers · asked by Anonymous in Science & Mathematics Chemistry

4 answers

The solution is acidic.
1. It is a fact that blue litmus turns red upon contact with an acidic solution.

2. Metals, namely Potassium, Sodium, Calcium, Magnesium, Aluminium, Zinc and Iron reacts to produce hydrogen gas when in placed in acids. (Don't try Potassium, Sodium or Calcium in acids! It causes an explosion.)

2007-03-10 12:14:32 · answer #1 · answered by Anonymous · 0 0

I feel as if I may be doing some homework for you...but here

Cheryl's test is acidic because:
1.Blue litmus paper will turn red in the presence of an acid.
2. Acids react with metals to form hydrogen gas.
3. Conduct electricity.

Bases conduct electricity as well but turn red on litmus paper. And if the unknown substance is neutral that means it is stable and will not react with Mg at all.

2007-03-10 10:47:52 · answer #2 · answered by Emma M. 2 · 0 0

Acids turn blue litmus paper red; bases turn red litmus paper blue.

2007-03-10 10:44:01 · answer #3 · answered by broadway_enthusiast 2 · 0 0

Uh...........I'm sorry. I'm still in biology.

2007-03-10 10:40:31 · answer #4 · answered by ╣♥╠ 6 · 0 1

fedest.com, questions and answers