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egoroff_w [7]
3 years ago
15

A student carries out the same titration but uses an indicator instead of a pH meter. If the indicator changes color slightly pa

st the equivalence point, what will the student obtain for the calculated concentration of the acid?
Chemistry
1 answer:
creativ13 [48]3 years ago
4 0

Answer:

Too high a value

Explanation:

HA + NaOH ⟶ NaA +H₂O

If the student has gone slightly past the equivalence point, they have added too much base.

The moles of HA are directly proportional to the moles of NaOH, so the moles of acid that the student calculates will be too high.

The calculated concentration of acid will also be too high.

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Formula semidesarrollada de los hidrocarburos aromáticos de 1 a 10 átomos de carbono
Tju [1.3M]

Answer:

El principal componente del gas natural es también el hidrocarburo más simple: el metano. Este compuesto está formado por un átomo de carbono y cuatro átomos de hidrógeno y se representa de dos formas:

El hidrocarburo que le sigue en simplicidad es aquel que está constituido por dos átomos de carbono. Su fórmula condensada es C2H6 y se le conoce como etano.

Si se continúan colocando átomos de carbono con enlaces sencillos entre ellos e hidrógenos en los enlaces libres, se crean largas cadenas de compuestos. Al etano le sigue el propano (C2H8) y a éste, el butano (C4H10). Todos estos compuestos forman parte de la familia de los alcanos, y sus nombres terminan con el sufijo –ano para indicar que pertenecen a la misma familia.

3 0
3 years ago
Determine the products of this unbalanced reaction: Select all that
inn [45]

Answer:

Ba3N2

Explanation:

valency of barium is+2and nitrogen is-3.

4 0
3 years ago
Which scientific discipline best links the use of titanium and plastics in artificial bone and joint replacements? physics chemi
Troyanec [42]

Correct answer choice is :


B) Chemistry


Explanation:


Advanced titanium-based compounds have been also used for some years for extremely stressed femoral segment stalks. Both metal samples present a higher impedance to pitting, crack, and galvanic corrosion, stress corrosion weakening and corrosion burnout than polished stainless steel of comparatively low power properties. For this purpose, the low element power of hip prostheses made of the recent stuff is paid for by a larger cross-section of the prosthetic stem, this depending on the geometric situations of the femur.

3 0
3 years ago
Read 2 more answers
How much heat is needed to raise the temperature of 7g of water by 19oC?
AlekseyPX
Data:

m = 7 g

ΔT = 19 °C

Cs of water = 1 cal / g °C

Formula Q = m * Cs * ΔT

Solution:

Q = (7 g) * (1 cal / g °C) * ( 19°C) = 133 cal
7 0
3 years ago
Read 2 more answers
In a hydrogen-oxygen fuel cell, A) no transfer of electrons occurs.B) both oxygen and hydrogen atoms lose electrons.C) both oxyg
avanturin [10]

Answer:

oxygen atoms gain electrons and hydrogen atoms lose electron

Explanation:

Hydrogen oxygen fuel cell involves redox reactions.

It is an electrochemical cell, which is used for many applications like rocket propellant.

The actual reaction is

H_{2}+\frac{1}{2}O_{2}--->H_{2}O

Here hydrogen undergoes oxidation as it loses electrons

Oxygen undergoes reduction as it gains electrons.

The redox reactions are

At anode:

H_{2}--->2H^{+}+2e [loss of electrons by hydrogen]

At cathode:

O_{2}+4H^{+}+4e--->2H_{2}O [gain of electrons by oxygen]

6 0
3 years ago
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