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
117 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: Find the value of sinh(arcosh(8)) + sin(arcosh(5)) - cosh(arcsin(0.6)) + tanh(arctanh(0.4)), rounded to the nearest hundredth.
+
What is the measure in degrees of an angle if it is given in radians as π/3?
+
Math question: Find the angle (in degrees) in a right triangle given that the tangent ratio is 0.5.
+
New questions in Mathematics
Solve: −3(−2x+23)+12=6(−4x+9)+9.
A person who weighs 200 pounds on earth would weigh about 32 pounds on the moon. Find the weight of a person on earth who would weigh 15 pounds on the moon.
String x = 5 Int y=2 System.out.println(x+y)
P is a polynomial defined by P(x) = 4x^3 - 11×^2 - 6x + 9. Two factors are (x - 3) and (x + 1). Rewrite the expression for P as the product of linear factors.
An electrical company manufactures batteries that have a duration that is distributed approximately normally, with a mean of 700 hours and a standard deviation of 40 hours. Find the probability that a randomly selected battery has an average life of less than 810 hours.
Margin of error E=0.30 populations standard deviation =2.5. Population means with 95% confidence. What I the required sample size (round up to the whole number)
A pair of die is thrown and the absolute difference of the two scores is recorded. What is the probability of the absolute difference being 4 or more?
15/5+7-5
Task 1 angel has 3 quarters 3/8 of a tank of gasoline and Miguel 7/8, who has more gasoline? number line on number line
Suppose you have a sample of 100 values from a population with mean mu = 500 and standard deviation sigma = 80. Given that P(z < −1.25) = 0.10565 and P(z < 1.25) = 0.89435, the probability that the sample mean is in the interval (490, 510) is: A)78.87% B)89.44% C)10.57% D)68.27%
User The average height of Aranka, Böske, Cili, Delinke and Lili is 172 cm. We know that Aranka and Cili are both 172 cm tall. The sum of the heights of Böské and Delinke is 336 cm. How tall is Lili?
0.1x8.2
2)A tourist has 15 pairs of pants in his hotel room closet. Suppose 5 are blue and the rest are black. The tourist leaves his room twice a day. He takes a pair of pants and puts them on, the tourist leaves the first pair of pants in the closet again and takes another one and puts them on. What is the probability that the two pants chosen are black?
A Smooth Plane is listed for $195.00. Discounts of 12% and 10% are allowed. If the customer pays cash within 30 days, an additional discount of 3% is granted. What is the cost if a carpenter takes advantage of all the discounts offered?
Buffalo Company makes and sells shampoo. Each unit requires $1.40 labor costs, material costs per unit are $0.90 and other variable costs are $0.30. It sells shampoo for $4.45 to retailers. Fixed costs are $15,000. It sold 25,000 units in the current month. What is the Break-Even point in units? What is the Break-Even point in dollars? What is the contribution margin of Buffalo Company?
2x2
Determine the Linear function whose graph passes through the points (6, -2) and has slope 3.
Two particles of electrical charges Q1=3.8×10-⁶C and q,=4.4×10-⁶C are separated in vacuum by a distance of 4.0.10-⁸ m. Since K=9.0.10⁹ N.m²/C², the intensity of the interaction force between them, in newtons, is?
7- A printing company found in its investigations that there were an average of 6 errors in 150-page prints. Based on this information, what is the probability of there being 48 errors in a 1200-page job?
Solve the following system of equations using substitution. y=-4x- 11. 3x+7y=-2