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3 years ago

Chemistry!! Help please!!

Chemistry

1 answer:

Flura [38]3 years ago

4 0

1. The conjugate acid-base pairs are HCl/Cl- and NH3/NH4+. They can be changed into one another by proton transfer.

2. The acid in the reaction is the molecule that has the lowest pKa value or (simply) gives their proton away the easiest. The pKa of HCl is around 3 I think while ammonia’s is around 35. This means HCl is the acid here. In the other reaction (backwards) you can see that NH4+ gives a proton to the chloride ion. To give a proton = acid. So the acids are HCl and NH4+ and the bases are NH3 and Cl-.

An important rule is: The stronger the acid/base, the weaker its conjugate base/acid.

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3 years ago

Is gas occupies 733 cm at 10.9 at what temp will it occupy 950 cm

alexgriva [62]

Temperature of gas at volume of 950 cm³ is 368.14K or 94.99⁰c.

Volume is the amount of space a three-dimensional object takes up, expressed in cubic units.
units of volume are mL, liter, cm³ or m³.

Given,

in this question, volume occupied by gas at 10.9⁰c is 733cm³.

we have to find out temperature at which gas occupies volume of 950 cm³.

First, convert temperature from celcius to Kelvin

10.9⁰c = 10.9 + 273.15 = 284.05 K

By equation or Boyle's Law

P1 x V1 / T1 = P2 x V2 / T2

Pressure is constant here

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we have to find out T2

So, 733 / 284.05 = 950 / T2

T2 = 284.05 × 950 / 733 = 368.14 K

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Therefore the temperature of gas at volume of 950 cm³ is 368.14K or 94.99⁰c.

Learn more about Boyle's Law here:

https://brainly.in/question/2900894

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