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Chemistry
GCSE

What factors increase rate of reaction? (For a reaction between two reagents in solution)

For reaction in solution: Increasing concentration of either of the reagents: Greater concentration=more reagent particles in solution, so there are more collisions.Increasing Temperature: reagent particl...

Answered by Samuel P. Chemistry tutor
1545 Views

Explain why ionic substances have high melting points?

Ionic substances have high melting points because a lot of energy is required to break the strong, electrostatic forces of attraction between the oppositely charged ion in the ionic substance.

Answered by Arunima B. Chemistry tutor
1799 Views

What are the similarities and differences between atoms of the isotopes Cl-35 and Cl-37

The numbers 35 and 37 are the mass numbers for the two isotopes of chlorine. They both have the same atomic number(proton number) as they are the same element, hence they also have the same number of elec...

Answered by Arunima B. Chemistry tutor
22345 Views

What are the 2 methods used to manufacture ethanol? What are the advantages and disadvantages of both?

The hydration of ethene: Ethene and steam are passed over a catalyst - concentrated phosphoric acid (H3PO4) - at 300OC and 60-70 atmospheres. This process is fast, continu...

Answered by James P. Chemistry tutor
6298 Views

Sodium Hydroxide can react with sulfuric acid in an acid base reaction. Outline the equation for this reaction, name the product. Finally a titration reaction is conducted. Determine the mass of NaOH needed to neutralise 12.4cm^3 of 0.10moldm^-3 H2SO4.

The equation is outlined below:      2NaOH + H2SO4------->> Na2SO4 + 2H2OAs explained in the question this is an acid base reaction, where the ...

Answered by Thomas M. Chemistry tutor
29514 Views

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