Which best describes how a pH test strip works?

Chemistry

2 answers:

Vikki [24]3 years ago

6 0

Answer: Option (A) is the correct answer.

Explanation:

A pH strip is a strip which helps in determining whether a solution is acidic or basic in nature.

That is, if a solution is acidic in nature then a pH strip will change from blue to red. Whereas when a solution is basic in nature then a pH strip will change from red to blue.

Thus, we can conclude that statement molecules in the paper react differently with hydronium and hydroxide ions, best describes how a pH test strip works.

NISA [10]3 years ago

4 0

Molecules in the paper react differently with Hydronium and Hydroxide.

pH paper deals with acidity and basicity of something. You are correct in thinking that A is the answer. Always go with your gut. don't be like me when I was in college who always second guessed my answers. Good luck with chemistry.

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Calculate the mass of 2.50 mol of CH,OH(1). Show your work. Use the appropriate

Sophie [7]

Answer:

80.1 grams

Explanation:

Find the molar mass of CH3OH first by using the periodic table values.

12.011 g/mol C + (1.008*3 g/mol H) + 15.999g/mol O + 1.008 g/mol H

=32.042 so that is the molar mass

Now that you have 2.50 moles of CH3OH, you can calculate the mass in g

2.50molCH3OH * (32.042g CH3OH / 1 mol CH3OH) = 80.105

32.042g / 1 mol is the same as 32.042 g/mol