Reef Chemistry Question of the Day# 300: Specific Gravity

[Randy Holmes-Farley]

Reef Chemistry Question of the Day 300

Which of the following has the highest specific gravity?

A. Normal seawater (35 ppt)
B. Kalkwasser/limewater (saturated calcium hydroxide)
C. Vodka for dosing (80 proof)
D. Vinegar for dosing (5% acidity)

Good luck!

Previous Reef Chemistry Question of the Day:

Reef Chemistry Question of the Day# 299: New Salt Water Parameters

Reef Chemistry Question of the Day 299 You are making a batch of new salt water for a water change, and realize that you overshot your salinity target. You measure the parameters to be: salinity 36 ppt pH 8.0 Calcium 455 ppm Alkalinity 9 dKH Magnesium 1380 ppm ORP 255 mV You then add some...

www.reef2reef.com

.

 

[GlassMunky]

Totally wild guess….
C

 

[KStatefan]

A

Wild guess but know Vodka is less then 1.

 

[WalkerLoves_TheOcean]

To be honest, I have no idea.

I can't see B, C, and D as a right answer, so my answer is A.

 

[Seven Year Nap]

A) Seawater at 35ppt.

I don't think Limewater has enough calcium hydroxide at saturation to approach the SG of seawater, ethanol has a lower SG than water, and while acetic acid is higher SG than seawater, at 5% in vinegar it would be below.

 

[dennis romano]

Gut feeling is vinegar.

 

[elysics]

A), calcium hydroxide has a bad solubility and acetic acid and ethanol are too close to water compared to salt

 

[Garf]

I'll go vinegar. My logic is thus. I've just cleaned out my kalk container to put one in with a little larger volume (100mls of vinegar per gallon of kalk) and as I tipped it away the bottom of the container smelled like a lemon squeezing factory, with all the doors shut.

 

[BeanAnimal]

Reef Chemistry Question of the Day 300

Which of the following has the highest specific gravity?

A. Normal seawater (35 ppt)
B. Kalkwasser/limewater (saturated calcium hydroxide)
C. Vodka for dosing (80 proof)
D. Vinegar for dosing (5% acidity)

Good luck!

I assume it would depend on temperature but at ~25C I would guess these are close?
A - 1.026
B - 2.240
C - 0.952
D - 1.006

So saturated limewater being the highest.

 

[Sophie"s mom]

Reef Chemistry Question of the Day 300

Which of the following has the highest specific gravity?

A. Normal seawater (35 ppt)
B. Kalkwasser/limewater (saturated calcium hydroxide)
C. Vodka for dosing (80 proof)
D. Vinegar for dosing (5% acidity)

Good luck!

Previous Reef Chemistry Question of the Day:

Reef Chemistry Question of the Day# 299: New Salt Water Parameters

Reef Chemistry Question of the Day 299 You are making a batch of new salt water for a water change, and realize that you overshot your salinity target. You measure the parameters to be: salinity 36 ppt pH 8.0 Calcium 455 ppm Alkalinity 9 dKH Magnesium 1380 ppm ORP 255 mV You then add some...

www.reef2reef.com

.

 

[Sophie"s mom]

Absolutely guess here, but I am thinking vinegar because I do know it has a salinity content to it along with it's acidity.

 

[Randy Holmes-Farley]

And the answer is...

Which of the following has the highest specific gravity?

A. Normal seawater (35 ppt)
B. Kalkwasser/limewater (saturated calcium hydroxide)
C. Vodka for dosing (80 proof)
D. Vinegar for dosing (5% acidity)


Good job, folks! Many right answers.

Normal 35 ppt seawater has a specific gravity of about 1.0264 at 25 deg C and is not too different at other temperatures.

At 25 degrees C, saturated calcium hydroxide contains about 1.6 grams of solids per liter (much less than the close to 35 grams for seawater). Thus, one might expect the specific gravity to also be much lower and closer to fresh water than seawater. The specific gravity at saturated calcium hydroxide (1.6 g/L) is noted in this article as 1.010 at 15 deg C, which is well below that of seawater.

https://www.lime.org/documents/lime_basics/lime-physical-chemical.pdf

The specific gravity of ethanol/water solutions, such as vodka, is below 1. The table in the link below gives it as 0.96.

Specific gravities | Food Standards Australia New Zealand

www.foodstandards.gov.au

Viengar has a specific gravity very close tot aht of water. The table linked below gives it as 1.006.

Specific Gravity Table - Triad Process -Ball Valves

Triads Specific Gravity Table allows our customers the ease of finding the specific gravity of whatever product they are running through their Valve.

www.triadprocess.com

 

[BeanAnimal]

And the answer is...

Which of the following has the highest specific gravity?

A. Normal seawater (35 ppt)
B. Kalkwasser/limewater (saturated calcium hydroxide)
C. Vodka for dosing (80 proof)
D. Vinegar for dosing (5% acidity)


Good job, folks! Many right answers.

Normal 35 ppt seawater has a specific gravity of about 1.0264 at 25 deg C and is not too different at other temperatures.

At 25 degrees C, saturated calcium hydroxide contains about 1.6 grams of solids per liter (much less than the close to 35 grams for seawater). Thus, one might expect the specific gravity to also be much lower and closer to fresh water than seawater. The specific gravity at saturated calcium hydroxide (1.6 g/L) is noted in this article as 1.010 at 15 deg C, which is well below that of seawater.

https://www.lime.org/documents/lime_basics/lime-physical-chemical.pdf

The specific gravity of ethanol/water solutions, such as vodka, is below 1. The table in the link below gives it as 0.96.

Specific gravities | Food Standards Australia New Zealand

www.foodstandards.gov.au

Viengar has a specific gravity very close tot aht of water. The table linked below gives it as 1.006.

Specific Gravity Table - Triad Process -Ball Valves

Triads Specific Gravity Table allows our customers the ease of finding the specific gravity of whatever product they are running through their Valve.

www.triadprocess.com

LoL - my math was way bad - very bad. Physics is my thing... i failed chem

Thanks Randy

 

[Garf]

And the answer is...

Which of the following has the highest specific gravity?

A. Normal seawater (35 ppt)
B. Kalkwasser/limewater (saturated calcium hydroxide)
C. Vodka for dosing (80 proof)
D. Vinegar for dosing (5% acidity)


Good job, folks! Many right answers.

Normal 35 ppt seawater has a specific gravity of about 1.0264 at 25 deg C and is not too different at other temperatures.

At 25 degrees C, saturated calcium hydroxide contains about 1.6 grams of solids per liter (much less than the close to 35 grams for seawater). Thus, one might expect the specific gravity to also be much lower and closer to fresh water than seawater. The specific gravity at saturated calcium hydroxide (1.6 g/L) is noted in this article as 1.010 at 15 deg C, which is well below that of seawater.

https://www.lime.org/documents/lime_basics/lime-physical-chemical.pdf

The specific gravity of ethanol/water solutions, such as vodka, is below 1. The table in the link below gives it as 0.96.

Specific gravities | Food Standards Australia New Zealand

www.foodstandards.gov.au

Viengar has a specific gravity very close tot aht of water. The table linked below gives it as 1.006.

Specific Gravity Table - Triad Process -Ball Valves

Triads Specific Gravity Table allows our customers the ease of finding the specific gravity of whatever product they are running through their Valve.

www.triadprocess.com

Ok, now I've confused myself. Why the heck did my kalk sludge whiff of acid? Lol. Note to self, clean it more often.

 

[Randy Holmes-Farley]

LoL - my math was way bad - very bad. Physics is my thing... i failed chem

Thanks Randy

Think you had the density of undissolved solid.

 

[Randy Holmes-Farley]

Ok, now I've confused myself. Why the heck did my kalk sludge whiff of acid? Lol. Note to self, clean it more often.

What does acid smell like? lol

 

[Garf]

What does acid smell like? lol

You know when you open a bottle of 37% hydrochloric and forget to take a deep breath first? A little like that, lol.

 

[Sophie"s mom]

And the answer is...

Which of the following has the highest specific gravity?

A. Normal seawater (35 ppt)
B. Kalkwasser/limewater (saturated calcium hydroxide)
C. Vodka for dosing (80 proof)
D. Vinegar for dosing (5% acidity)


Good job, folks! Many right answers.

Normal 35 ppt seawater has a specific gravity of about 1.0264 at 25 deg C and is not too different at other temperatures.

At 25 degrees C, saturated calcium hydroxide contains about 1.6 grams of solids per liter (much less than the close to 35 grams for seawater). Thus, one might expect the specific gravity to also be much lower and closer to fresh water than seawater. The specific gravity at saturated calcium hydroxide (1.6 g/L) is noted in this article as 1.010 at 15 deg C, which is well below that of seawater.

https://www.lime.org/documents/lime_basics/lime-physical-chemical.pdf

The specific gravity of ethanol/water solutions, such as vodka, is below 1. The table in the link below gives it as 0.96.

Specific gravities | Food Standards Australia New Zealand

www.foodstandards.gov.au

Viengar has a specific gravity very close tot aht of water. The table linked below gives it as 1.006.

Specific Gravity Table - Triad Process -Ball Valves

Triads Specific Gravity Table allows our customers the ease of finding the specific gravity of whatever product they are running through their Valve.

www.triadprocess.com

Thank you as always.

 

[Randy Holmes-Farley]

You know when you open a bottle of 37% hydrochloric and forget to take a deep breath first? A little like that, lol.

Lol

Well, whatever it is you smell above the residual solids, I doubt it is HCl. lol

 

[BeanAnimal]

You know when you open a bottle of 37% hydrochloric and forget to take a deep breath first? A little like that, lol.

I dunno about that- but I got a bottle of crystals to replace good ol' ammonia inhalants and made the mistake of not thinking that they would be much different... Upon opening and placing my beak in the proximity of the jar, I think my brian smelled them directly, bypassing the olfactory nerve altogether.