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mart [117]
3 years ago
14

0.01 M HCl solution has a pH of 2. Suppose that during the experiment, both the universal pH indicator and the cabbage indicator

turn orange-red for 0.01 M HCl. What can you conclude about the the cabbage indicator key?
Chemistry
4 answers:
evablogger [386]3 years ago
6 0
A) It matches the universal pH indicator and is indicating the proper pH. Yes, this is correct. Have a great day!
NNADVOKAT [17]3 years ago
5 0
It matches the universal pH indicator and is indicating the proper pH
zvonat [6]3 years ago
5 0

Answer:

A ) it matches the universal pH indicator and is indicating the proper pH

Novay_Z [31]3 years ago
4 0
YOU ARE PROBABLY CHEATING RIGHT NOW!!! ... that's cool ig...
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3 years ago
A 52.0-mL volume of 0.35 M CH3COOH (Ka=1.8×10−5) is titrated with 0.40 M NaOH. Calculate the pH after the addition of 23.0 mL of
Georgia [21]

NaOH reacts with CH3COOH in 1:1 molar ratio to produce CH3COONa 

NaOH + CH3COOH → CH3COONa + H2O 

Mol CH3COOH in 52.0mL of 0.35M solution = 52.0/1000*0.35 = 0.0182 mol CH3COOH 

Mol NaOH in 19.0mL of 0.40M solution = 19.0/1000*0.40 = 0.0076 mol NaOH 

These will react to produce 0.0076 mol CH3COONa and there will be 0.0182 - 0.0076 = 0.0106 mol CH3COOH remaining in solution unreacted . Total volume of solution = 52.0+19.0 = 71mL or 0.071L 

Molarity of CH3COOH = 0.0106/0.071 = 0.1493M 

CH3COONa = 0.0076 / 0.071 = 0.1070M 

pKa acetic acid = - log Ka = -log 1.8*10^-5 = 4.74. 

pH using Henderson - Hasselbalch equation: 

pH = pKa + log ([salt]/[acid]) 

pH = 4.74 + log ( 0.1070/0.1493) 

pH = 4.74 + log 0.717 

pH = 4.74 + (-0.14) 

pH = 4.60.

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3 years ago
If you need to measure the mass of a greeting card you are sending to a friend through the mail, what unit of measurement would
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2 years ago
Why does hydrogen peroxide turn your skin white
Julli [10]

Answer:

Hydrogen Peroxide is known as a dental “debriding agent”. But when used on skin for minor wounds it will foam and turn surrounding tissue white. ... H2O2 decomposes easily to make water (H2O) and a single free oxygen atom which is looking for something to react with - like your skin.

Explanation:

4 0
3 years ago
Read 2 more answers
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