If It takes 60mL of 0.20M of sodium hydroxide (NaOH) to neutralize 25 mL of carbonic acid (
), then the concentration of the carbonic acid is 0.24M
The reaction between NaOH solution and
is written below
![2NaOH + H_2CO_3 \rightarrow Na_2CO_3 + 2H_2O](https://tex.z-dn.net/?f=2NaOH%20%2B%20H_2CO_3%20%5Crightarrow%20Na_2CO_3%20%2B%202H_2O)
Volume of NaOH,
= 60 ml
Volume of
, ![V_A=25 ml](https://tex.z-dn.net/?f=V_A%3D25%20ml)
Molarity of
, ![C_A=?](https://tex.z-dn.net/?f=C_A%3D%3F)
Molarity of NaOH, ![C_B=0.20M](https://tex.z-dn.net/?f=C_B%3D0.20M)
Number of moles of
, ![n_A=1](https://tex.z-dn.net/?f=n_A%3D1)
Number of moles of NaOH, ![n_B=2](https://tex.z-dn.net/?f=n_B%3D2)
The mathematical equation for neutralization reaction is:
![\frac{C_AV_A}{C_BV_B} =\frac{n_A}{n_B}](https://tex.z-dn.net/?f=%5Cfrac%7BC_AV_A%7D%7BC_BV_B%7D%20%3D%5Cfrac%7Bn_A%7D%7Bn_B%7D)
Substitute
,
,
,
= 60ml, and
into the equation above in order to solve for ![C_A](https://tex.z-dn.net/?f=C_A)
![\frac{C_A \times 25}{0.2 \times 60}=\frac{1}{2} \\\\50C_A=12\\\\C_B=\frac{12}{50} \\\\C_B=0.24M](https://tex.z-dn.net/?f=%5Cfrac%7BC_A%20%5Ctimes%2025%7D%7B0.2%20%5Ctimes%2060%7D%3D%5Cfrac%7B1%7D%7B2%7D%20%20%5C%5C%5C%5C50C_A%3D12%5C%5C%5C%5CC_B%3D%5Cfrac%7B12%7D%7B50%7D%20%5C%5C%5C%5CC_B%3D0.24M)
Therefore, the concentration of the carbonic acid is 0.24M
Learn more here: brainly.com/question/25943090
<u>Answer:</u> The atomic mass of carbon is 12 amu and that of carbon dioxide is 44 g/mol
<u>Explanation:</u>
Molar mass is defined as the sum of the mass of all the atoms each multiplied its atomic masses that are present in the molecular formula of a compound. It is expressed in g/mol.
We know that:
Atomic mass of carbon = 12 amu
We are given a chemical compound, carbon dioxide having chemical formula of ![CO_2](https://tex.z-dn.net/?f=CO_2)
Molar mass of carbon = 12 g/mol
Molar mass of oxygen = 16 g/mol
Evaluating the molar mass of carbon dioxide, we get:
Molar mass of ![CO_2=[12+(2\times 16)]=44g/mol](https://tex.z-dn.net/?f=CO_2%3D%5B12%2B%282%5Ctimes%2016%29%5D%3D44g%2Fmol)
Hence, the atomic mass of carbon is 12 amu and that of carbon dioxide is 44 g/mol
Sensory nerves gather information of the environment and send it to the brain, and motor nerves tell muscles to contract, thereby making you move.
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Answer:
Sonoluminescence can occur when a sound wave of sufficient intensity induces a gaseous cavity within a liquid to collapse quickly. [...] The bubbles are very small when they emit the light—about 1 micrometer in diameter—depending on the ambient fluid (e.g., water) and the gas content of the bubble (e.g., atmospheric air).
Explanation:
Source is Google
Answer:
Mass of Nacl = 4.92 gram (Approx)
Explanation:
Given:
Hydrochloric acid = 3.3 g
Sodium hydroxide = 5 g
Computation:
Hcl + NaoH ⇒ Nacl + H₂O
Number of mole of Hcl = 3.3 / 36.46 = 0.0905 moles
Number of mole of NaoH = 5 / 40 = 0.125 moles
We, know that number of moles in Hcl is less then number of mole in NaoH
So,
Number of mole of Hcl = Number of mole of Nacl
So,
Mass of Nacl = Number of mole of Nacl × Molar mass of Nacl
Mass of Nacl = 0.0905 × 54.4
Mass of Nacl = 4.92 gram (Approx)