quimica gran gonorrea hpta

Question 1

what is the process of alcoholic fermentation?

Answer 1

Sugar+yeast turns to ethanol+co2+heat

Question 2

What is the chemical formula for sugar?

Answer 2

Sugar=C6H12O6

Question 3

What is the chemical formila for alcoholic fermentation?

Answer 3

C6H12O6+YEAST=2C2H5OH+2CO2

Question 4

Glucose is…

Answer 4

an aldehyde

Question 5

fructose is

Answer 5

ketone

Question 6

la nomenclatura de los alcoholes vienen del

Answer 6

athanal

Question 7

acetic acid is

Answer 7

COOH= carboxulic acid

Question 8

what does PH 7 mean on the logarithmic scale

Answer 8

1/10,000,000

Question 9

PH stands for?

Answer 9

power of hydrogen ions

Question 10

what is the basic value of Ph

Answer 10

7

Question 11

Low ph household item

Answer 11

lemon juice ph2

Question 12

high ph household item

Answer 12

soap ph 11

Question 13

the mathematical equation to find ph

Answer 13

pH=-log(H+)

Question 14

the usual ph range of wine

Answer 14

2.8-3.8

Question 15

pHo

Answer 15

Power of hydroxide

Question 16

as (H+) decreases what happens to the solution?

Answer 16

becomes basic and increases in (OH-) which is basic aka alkaline, caustin

Question 17

water what is its dissociation

Answer 17

Kw=1.0*10a la -14 or H2O(l)==H+(aq)+OH-(aq)

Question 18

What is a mol?

Answer 18

is a standard unit of measurement that we will use to balance mass in chemical equations

Question 19

What is the significance of this number? (6.0221667 x 1023)

Answer 19

Avogadro’s number - mol is based amount of atoms

Question 20

At pH7, the concentration of both ions are equal

Answer 20

[H+] = [OH-] 1 mol of H+ = 1 mol OH-

Question 21

What happens when NaOH dissolves in water?

Answer 21

dissociate to Na+ and OH- → 1 mol of OH- can react with 1 mol H+, its normality = 1

Question 22

What is 1 mol/L of NaOH is equal to?

Answer 22

1N NaOH solution → 1M NaOH = 1N NaOH

Question 23

What are NaOH solutions used for?

Answer 23

To neutralize H+ ions and calculate the amount of organic acids in solution (by titration)

Question 24

when diluting a solution with water how many moles will remain?

Answer 24

the moles will stay the same but the concentration and volume will go dow

Question 25

equation of initial molarity and volume against the final volume and molarity

Answer 25

M1V1=M2V2

Question 26

WHAT is a polar molecule

Answer 26

Water is a polar molecule and as a solvent can dissolve other polar molecules

Question 27

What happens to the total acidity during grape ripening?

Answer 27

Total Acidity decreases during grape ripening.

Question 28

What type of sugar is in grapes?

Answer 28

95% Glucose and Fructose, 3% Sucrose & 1% Pentose (+0.6 Pectins)

Question 29

What is Sucrose?

Answer 29

Sugars that need to be broken apart by yeast enzymes.

Question 30

What is Pentose?

Answer 30

5-Carbon Sugar that yeast CAN’T ferment (non-fermentable)

Question 31

What unit of measurement is Brix?

Answer 31

grams per 100mL (NOT g/L!!!) of total soluble solids (solutes) per 100g (‘amount of stuff’ in liquid)

Question 32

Is Baume the same as Brix?

Answer 32

Baume is a measurement in Australia similar to brix (1 Baume:1.8 Brix)

Question 33

What is a density meter (DMA)?

Answer 33

A $5000+ tool to measure density and temperature in juice and fermenting samples. It is easy to use and fragile.

Question 34

What item in a winery is NaOH?

Answer 34

Caustic soda; used to clean tartrate salts from tanks and equipment

Question 35

What is H2T?

Answer 35

tartaric acid

Question 36

What is the unit for Total Acidity?

Answer 36

Total Acidity is expressed in g/L H2T

Question 37

How can you determine TA in a wine sample?

Answer 37

We can determine by titration with NaOH Solution