Asked by ChitraChemistry βš›οΈ

Why liq. NH3 cannot be used as a leveling solvent for NaOH and NaNH2?

Profile picture

James Vardini

I have recently graduated from Imperial College London with an Upper Second Class degree in Biochemistry

If you really want to make a solution of HClO3, then indeed the way to go is reaction of dilute sulphuric acid with barium chlorate. Another option, which gives fairly pure HClO3 is mixing a hot solution of KClO3 with a hot solution of HClO4. On cooling down, KClO4 is formed. When the liquid is cooled to well below zero, then 99% or so of all KClO4 precipitates from the liquid. Use a slight excess of HClO4 and the resulting liquid will be almost free of any potassium. At concentrations of 20% or so, a solution of HClO3 is quite stable and then it may be hot. At 35% to 40% the solution already is much less stable and then heating leads to disproportionation to HClO4, ClO2, Cl2 and H2O. You can easily see this, the liquid then turns yellow.

James also answered

Asked in Chemistry βš›οΈ

ASKED BY TAEGON

CHEMISTRY βš›οΈ

How many miles are there in 44g of CO2? How many molecules is this?

Assuming you mean moles rather than miles To calculate moles we use the equation moles=mass/Mr We have been given the mass in the question, and we c...

ASKED BY KIRAN

CHEMISTRY βš›οΈ

How to calculate concentration of a solution?

Concentration (measured in moles per litre) = amount of solute (measured in moles) divided by the volume of solution (measured in litres) The amount...

ASKED BY DAISY

CHEMISTRY βš›οΈ

What is the difference between a chemical and a phi social change?

Hi Daisy, a chemical change is where a chemical reaction has occurred and this is usually a one way reaction. For example, the carbon in wood combin...

ASKED BY DOMINIQUE

CHEMISTRY βš›οΈ

How does an atom of lithium form an ionic bond with an atom of chlorine?

Lithium β€˜loses’ its valence electron and forms a positive lithium cation. Chlorine β€˜gains’ that electron and forms a negative chloride anion. The op...

ASKED BY NICOLE

CHEMISTRY βš›οΈ

What is an acid and what is an alkali?

The answer to your question really depends upon the level of answer that you need. At a most basic level (excuse the chemistry pun!), acids taste so...

ASKED BY TOBY

CHEMISTRY βš›οΈ

Why is potassium more reactive than sodium?

This is todo with the structure of the atoms. Both are in Group 1 of the periodic table so have one valence (outer) electron which is relatively eas...

ASKED BY JESS

CHEMISTRY βš›οΈ

Compare decomposition reactions with combustion reactions?

Decomposition reactions are reactions in which one reactant breaks down at least two products. AB -> A + B This may be because the reactant is energ...

ASKED BY ADDIE

CHEMISTRY βš›οΈ

G is a colourless crystalline solid which reacts with dilute nitric acid to give a colourless solution, H, and a colourless, odourless gas, I, which turns limewater milky. G has a lilac flame colour. Identify G, H and I (I’m aware that I is CO2)?

If you know that I is CO2, then you can probably already guess which anion it must have come from it in the reaction with the nitric acid.... All yo...

ASKED BY ADDIE

CHEMISTRY βš›οΈ

G is a colourless crystalline solid which reacts with dilute nitric acid to give a colourless solution, H, and a colourless, odourless has, I, which turns limewater milky. G has a lilac flame colour. State the names of G, H and I?

Hi Addie. I hope you are well. Since the 'gas I' can turn the limewater milky, it must be carbon dioxide gas, meaning the crystalline solid is a car...

ASKED BY KIRAN

CHEMISTRY βš›οΈ

What is the relative formula mass of: NaBr, CO2, H2S, BaSO4, Cu(NO3)2, FeCL3?

NaBr: 23 + 79.9 = 102.9 CO2: 12 + 16 + 16 = 44 H2S: 1 + 1 + 32.1 = 34.1 BaSO4: 137.3 + 32.1 + 16 + 16 + 16 + 16 = 233.4 Cu(NO3)2: 63.5 + 14 + 16 + 1...

Find me a tutor

We take your privacy seriously. View our policy.