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
119 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)
Find the eccentricity of an ellipse with major axis length 8 and minor axis length 4.
+
Find the value of sin(45°) + cos(30°) × tan(60°).
+
Question: Simplify (3^2)^5 / 3^7 using exponent rules.
+
New questions in Mathematics
STUDENTS IN A CLASS LEARN ONLY ONE FOREIGN LANGUAGE. two-sevenths of the students learn German, half of the students learn Spanish, and the remaining six students learn Italian. what is the number of students in this class? detail your reasoning carefully.
The graph of the equation x²= 4py is a parabola with focus F(_,_) and directrix y=_____ Therefore, the graph of x²=12y is a parabola with focus F(_,_) and a directrix y=_____
The ratio of tomatoes to red apples is 2:5. If there are 20 tomaoes in the garden, how many red apples are there?
Consider numbers from 1 to 2023. We delete 3 consecutive numbers so, that the avarage of the left numbers is a whole number
Log(45)
A study reports the following final notation: F (3, 32) = 9.50, p < .05. How many total participants were involved in this study? Group of answer choices 34 32 36
form a key for your lock containing the numbers 2 2 5 8 How many different keys can you form?
A recurring sequence is one where elements repeat after completing one standard. If the sequence AB8C14D96AB8C1... is recurring its twentieth term is equal to: (A) B. (B) 8. (C) A. (D) 6. (E) D.
Use linear approximation to estimate the value of the sine of 31o.
On+January+10+2023+the+CONSTRUCTORA+DEL+ORIENTE+SAC+company+acquires+land+to+develop+a+real estate+project%2C+which+prev%C3% A9+enable+50+lots+for+commercial+use+valued+in+S%2F+50%2C000.00+each+one%2C+the+company+has+as+a+business+model+generate+ cash+flow+through%C3%A9s+of+the+rental%2C+so+47%2C+of+the+50+enabled+lots+are+planned to lease+47%2C+and+ the+rest+will be%C3%A1n+used+by+the+company+for+management%C3%B3n+and+land+control
Sabendo+que+o+tri%C3%A2ngulo+ABC+%C3%A9+ret%C3%A2ngulo+e+que+um+de+seus+%C3%A2ngulos+mede+30+quanto+mede+o+terceiro+ tri%C3%A2ngulo
find missing measure for triangle area = 48 m square base = 10m heaighy = ? m
2x-5-x+2=5x-11
A property sold for $745,000 in a co-brokered transaction. The seller has agreed to pay a 7% commission to the listing firm. The listing firm has agreed to equally split the commission with the selling firm. If the buyer’s broker will receive 8% of the selling firm’s commission, how much commission will the buyer’s broker receive? $14,900 $3725 $$37250 $18625
X^X =49 X=?
a) 6x − 5 > x + 20
If the mean of the following numbers is 17, find the c value. Produce an algebraic solution. Guess and check is unacceptable. 12, 18, 21, c, 13
An export company grants a bonus of $100,000 pesos to distribute among three of its best employees, so that the first receives double the second and the latter receives triple the third. How much did each person receive?
15=5(x+3)
5 1/9 + 2 2/3