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Calculate the pH of the buffer solution resulting from mixing 250 cm^3 of 0.3 moldm^-3 ethanoic acid with 250cm^3 of 0.2 moldm^-3 sodium hydroxide. The Ka of ethanoic acid is 1.8 x 10^-5.

As an acid is being added to a base, you first need to calculate what is left after they react. Without doing any calculations, we can already see that the acid is in excess as both solutions have the sam...

Answered by Tutor125302 D. • Chemistry tutor

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What is a mole?

A mole is a measure of quantity, such that when you have a mole of something, you have 6.02 x 10²³ atoms/molecules of it. The number of atoms/molecules in a mole is called "Avogadro's Numb...

Answered by Amy F. • Chemistry tutor

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What characteristic ion can denote the difference between an acid and an alkali and give an example?

For an acid the formation of a hydrogen ion denotes it as being acidic.HCL -> H+ + CL-Where as for an alkali the formation of a hydroxyl ion denotes is as being alkaliNAOH -> Na+ and OH-

Answered by Scarlett K. • Chemistry tutor

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2NaNO3 --> 2NaNO2 + O2. When a sample of solid sodium nitrate was heated 96cm3 of gas was collected, calculate the mass of NaNO3 Decomposed

We know that the reaction is a 2:1 ratio as 2 moles of NaNO3 is used to form 1 mole of O2 so first we need to find the moles of the product produced
SoVolume of gas (dm3)= number of moles x 24dm3The...

Answered by Sara Z. • Chemistry tutor

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What are the different factors that contribute to bonding?

Firstly, let's start off with the simplest type of bonding. Ionic bonding involves the transfer of electrons, usually from a metal (Sodium/Na) to a non-metal (Chlorine, Cl). This creates an attraction bet...

Answered by Viral M. • Chemistry tutor

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