In the following balanced neutralization reaction equation, how many moles of hcl are required to completely neutralize 0.040 moles of naoh?
hcl + naoh → nacl + h2o
0.020 moles
0.080 moles
0.040 moles
1.0 mole

The balanced chemical reaction is:

HCl + NaOH → NaCl + H2O

We are given the amount of sodium hydroxide to be used for the reaction. This will be the starting point of our calculations.

0.040 mol NaOH (1 mol HCl / 1 mol NaOH) = 0.040 mol of HCl

Therefore, the correct answer is the third option, 0.040 moles.

0.040 mol NaOH (1 mol HCl / 1 mol NaOH) = 0.040 mol of HCl

Therefore, the correct answer is the third option, 0.040 moles.

(PH color chart at the bottom)

Chop the cabbage into small pieces until you have about 2 cups of chopped cabbage. Place the cabbage in a large beaker or other glass container and add boiling water to cover the cabbage. Allow at least 10 minutes for the color to leach out of the cabbage. Alternatively, you can place about 2 cups of cabbage in a blender, cover it with boiling water, and blend it.

Filter out the plant material to obtain a red-purple-bluish colored liquid. This liquid is at about pH 7. The exact color you get depends on the pH of the water.

Pour about 50–100 mL of your red cabbage indicator into each 250 mL beaker.

Add various household solutions to your indicator until it changes color. Use separate containers for each household solution—you don't want to mix chemicals that don't go well together.

2=Red

4=Purple

6=Violet

8=Blue

10=Blue Green

12 = Green Yellow