Question

Propose the experimental design to determine the sodium hydroxide concentration (NaOH), the sample has a total volume of 150 mL. For the titration, Nitric Acid (HNO3). Volumetric flasks of 50 mL, 100 mL and 250 mL are available. According to the technicians' notes, the titration is carried out with 2 M titrant. a) Prepare the titrant at 2 M b) Determine the concentration of the analyte if the change is at 0.11 L

72

likes
362 views

Answer to a math question Propose the experimental design to determine the sodium hydroxide concentration (NaOH), the sample has a total volume of 150 mL. For the titration, Nitric Acid (HNO3). Volumetric flasks of 50 mL, 100 mL and 250 mL are available. According to the technicians' notes, the titration is carried out with 2 M titrant. a) Prepare the titrant at 2 M b) Determine the concentration of the analyte if the change is at 0.11 L

Expert avatar
Cristian
4.7
118 Answers
a) \text{Preparar el valorante a 2 M}

Para preparar una disolución de valorante de HNO3 (Ácido Nítrico) a una concentración de 2 M, primero es necesario entender el volumen del matraz que se seleccionará para diluir HNO3.

Para un volumen de 100 mL:
C_{HNO3} = 2 \, \text{M}
V_{HNO3} = 0.10 \, \text{L}
Por lo tanto, la cantidad de moles de HNO3 necesaria es:
\text{moles de } HNO3 = C_{HNO3} \times V_{HNO3}
= 2 \, \text{M} \times 0.10 \, \text{L}
= 0.20 \, \text{moles} .

b) \text{Determinar la concentración del analito si el viraje es a 0.11 L}

- Se asume que hay una titulación 1:1 entre HNO3 y NaOH.

Moles de HNO3 usadas:
C_{HNO3} = 2 \, \text{M}
V_{HNO3 (utilizado)} = 0.11 \, \text{L}
\text{moles de } HNO3 = C_{HNO3} \times V_{HNO3 (utilizado)}
= 2 \, \text{M} \times 0.11 \, \text{L}
= 0.22 \, \text{moles}

- Como la reacción es 1:1, los moles de NaOH serán iguales:
\text{moles de } NaOH = 0.22 \, \text{moles}

- Calculamos la concentración de NaOH:
V_{NaOH} = 0.150 \, \text{L}
C_{NaOH} = \frac{\text{moles de } NaOH}{V_{NaOH}}
= \frac{0.22 \, \text{moles}}{0.150 \, \text{L}}
= 1.467 \, \text{M}

Por lo tanto,
\text{Concentración de NaOH} = 1.467 \, \text{M} .

Frequently asked questions (FAQs)
Question: What is the limit as x approaches 4 of [(x^2 + 3x - 4) / (x - 4)] + [(3x - 5) / (x - 4)]?
+
Question: Find the period of the trigonometric function f(x) = 3sin(4x) + cos(2x) + tan(5x).
+
What is the measure of each angle formed when an angle bisector divides an angle into two congruent angles?
+
New questions in Mathematics
calculate the derivative by the limit definition: f(x) = 6x^3 + 2
Solution of the equation y'' - y' -6y = 0
find the value of the tangent if it is known that the cos@= 1 2 and the sine is negative. must perform procedures.
-8+3/5
The random variable Y is defined as the sum between two different integers selected at random between -4 and 2 (both included). What are the possible values of the random variable Y? What is the value of P(Y=-3)? And whether it is less than or equal to -5?
A drawer contains three pairs of white socks, five pairs of black socks and two pairs of red socks. Caden randomly selects two pairs of socks on his way to the gym. What is the probability that both pairs of socks are black?
A juice shop prepares assorted juices, for their juices they have 5 different types of fruit. How many types of assortments can be prepared in total, if it is considered an assortment to a juice made with two or more fruits?
Find the root of x^4-10x^ 5=0 using Newton's method, with a precision of the smallest positive root.
The function g:Q→Q is a ring homomorphism such that g(3)=3 and g(5)=5. What are the values of g(8) and g(9)?
Find the equation of the line perpendicular to −5𝑥−3𝑦+5=0 passing through the point (0,−2)
Substitute a=2 and b=-3 and c=-4 to evaluate 2ac/(-2b^2-a)
form a key for your lock containing the numbers 2 2 5 8 How many different keys can you form?
Calculate the boiling temperature and freezing temperature at 1 atmosphere pressure of a solution formed by dissolving 123 grams of ferrous oxide in 1.890 grams of HCl.
How many square feet of floor area are there in three two-storey apartment houses, each of which is 38 feet wide and 76 feet long?
How to do 15 x 3304
At the dance there are 150 boys the rest are girls. If 65% are girls what is the total amount in the room
Determine a general formula​ (or formulas) for the solution to the following equation.​ Then, determine the specific solutions​ (if any) on the interval [0,2π). cos30=0
In poker, a full house consists of five cards, where two of the cards have the same number (or letter) and the remaining three also have the same number (or letter) as each other (but not as the previous two cards). Use a search engine or Wikipedia to understand the concept better if necessary. In how many different ways can one obtain a full house?
7-1=6 6x2=12 Explain that
A grain silo has a height of 8.8m with a 11.4m diameter. If it is filled 0.5% of it's volume, how much grain (m^3) is stored in the silo? (0 decimal places)