Thursday
October 23, 2014

Homework Help: Chemistry

Posted by K on Saturday, March 26, 2011 at 11:09pm.

Titration of an Unknown Acid...

What effect on the molar mass of the unknown acid would each of the following have... Would it make the calculated molar mass high, low, or would it have no effect?

1. Adding 5 drops of phenolphthalein instead of 1 drop... Answer: No effect.

2. Using a standard NaOH solution that has been left unstoppered for several days... Answer: Low

3. Failing to remove an air bubble in the tip of the burety containing the NaOH soltuion prior to titration... Answer: High

4. Failing to rinse down the unknown acid solution from the inside walls of the flask near the end of the titration... Answer: Low

5. Placing the unknown acid in a wet container prior to weighing it... Answer: High

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chemistry - What effect on the molar mass of the unknown acid would each of the ...
Chemistry HELP! - a) How would a too low molarity of NaOH affect the calculated...
Chemistry HELP! - a) How would a too low molarity of NaOH affect the calculated...
chemistry - A student performed the freezing point depression experiment ...
College Chemistry - We will calculate the amount of acid to use in each ...
chemistry - A) A student performed the freezing point depression experiment ...
chemistry - (A) A student performed the freezing point depression experiment ...
Chemistry - Include an explanation, balanced chemical equation, units, ...
Chemistry - Lab: Titration of NaOH (0.1 molar)to unknown solid acid. Trying to ...
Chemistry - I got think I got the following questions almost figured, but I just...

Search
Members