Chem Lab C

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N0sm4
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Chem Lab C

Post by N0sm4 » December 15th, 2020, 6:44 pm

Ok so let’s get this question marathon started :D

So I am going to start off with a relatively easy question

1. If you have 30 mL of 0.2 M NaOH, how many liters of 0.3 M HNO3 is required to turn the phenol red indicator in the solution red.
Last edited by N0sm4 on December 15th, 2020, 6:49 pm, edited 1 time in total.

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Mayur917
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Re: Chem Lab C

Post by Mayur917 » December 15th, 2020, 7:55 pm

N0sm4 wrote:
December 15th, 2020, 6:44 pm
Ok so let’s get this question marathon started :D

So I am going to start off with a relatively easy question

1. If you have 30 mL of 0.2 M NaOH, how many liters of 0.3 M HNO3 is required to turn the phenol red indicator in the solution red.
Strong Acid + Strong Base » Neutral solution + H2O
HNO3 (aq) + NaOH (aq) » NaNO3 (aq) + H2O (l)

Molar ratios are all 1 so we can proceed with M1V1 = M2 V2

(0.2 M) (0.03 L) = (0.3) (V2)
0.02 L = V2
20 mL are required to turn the phenol red indicator into the solution red.
Is that the correct answer?
Last edited by Mayur917 on December 16th, 2020, 3:31 pm, edited 3 times in total.
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N0sm4
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Re: Chem Lab C

Post by N0sm4 » December 16th, 2020, 12:46 pm

Mayur917 wrote:
December 15th, 2020, 7:55 pm
N0sm4 wrote:
December 15th, 2020, 6:44 pm
Ok so let’s get this question marathon started :D

So I am going to start off with a relatively easy question

1. If you have 30 mL of 0.2 M NaOH, how many liters of 0.3 M HNO3 is required to turn the phenol red indicator in the solution red.
Strong Acid + Strong Base » Neutral solution + H2O
HNO3 (aq) + NaOH (aq) » NaNO3 (aq) + H2O (l)

Molar ratios are all 1 so we can proceed with M1V1 = M2 V2

(0.2 M) (0.03 L) = (0.3) (V2)
0.02 L = V2
20 mL are required to turn the phenol red indicator into the solution red.

Is that the correct answer?
Yeah and also a note for next time remember to put your answer in between answer tags or in a spoiler.

Code: Select all

[answer]Your answer/work here[/answer]
Your turn now.
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