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Chemistry

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Why are ionic and covalent bonding different?

So, when two molecules are bonding to each other they are always trying to achieve the same state, which is having a full outer shell of electrons. Ionic and Covalent bonding are two different ways of get...

Answered by Amy M. • Chemistry tutor

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What name is given to the elements on group 7 of the periodic table and what happens to their boiling point as you go down the column?

Halogens. Boiling point increase as you go down the group. (This is because the size of the molecules increase as you go down the group, which increases the strengths of van der Waals forces)

Answered by Leo W. • Chemistry tutor

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What is the difference between an endothermic and exothermic reaction? How would you determine if a reaction was endothermic or exothermic using simple lab equipment?

An exothermic reaction is one in which heat is released from the reaction system to its surroundings, causing an increase in temperature. 'Exo' means to give off, heat is expelled in this reaction. An end...

Answered by Annu C. • Chemistry tutor

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Describe the difference between ionic and covalent bonds

Ionic bonds are formed due to the strong electrostatic connection between oppositely charged ions whereas covalent bonds are formed by the sharing of an electron pair between two atoms

Answered by Tanyaradzwa S. • Chemistry tutor

3543 Views

In a titration, 50 cm3 of sodium hydroxide with a concentration of 0.3 mol/dm3 was neutralised by 60 cm3 of hydrochloric acid. Calculate the concentration of the hydrochloric acid in mol/dm3.

HCl + NaOH = NaCl + H2O. Moles = volume (dm3) x concentration (mol/dm3). Moles of NaOH: volume x concentration = (50/1000) x 0.3 = 0.015 moles. 1 to 1 ratio of HCl to NaOH, so there were 0.015 moles of HC...

Answered by Aarushi V. • Chemistry tutor

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