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Chemistry
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How do you calculate the pH of a weak acid?

Lets say we have 0.89 mol dm-3 of CH3COOH, a weak acid, with a ka of 1.7X10^-5.We want to find Ph, but to do this we first need to know [H+] because PH = -log10[H+].Because CH3COOH is a weak acid, it only...

AH
Answered by Amy H. Chemistry tutor
12111 Views

What's the difference between covalent and ionic bonding?

Covalent bonding happens when two molecules share a pair of electrons. For example in hydrogen chloride (HCl). Ionic bonding is when two oppositely charged ions are attracted to each other to form a la...

IS
Answered by Isobel S. Chemistry tutor
2396 Views

State in terms of its bonding why benzene is more stable than cyclohexa-1,3,5-triene:

Due to the delocalisation of electrons in the benzene ring conferring more stability on the structure.

RJ
14191 Views

Which molecule has the highest boiling point: methane, ammonia, water or hydrogen fluoride? Explain why.

Answer: water, followed by hydrogen fluroide, ammonia and lowest is methane.

Explanation: First it helps to write the molecular formulae of these molecules and know their shape:

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PW
Answered by Peter W. Chemistry tutor
78938 Views

Describe and explain the trend in reactivity of Group 2 elements with chlorine as the group is descended?

As group 2 in the periodic table comprises of metals, the reactivity of group 2 elements towards chlorine increases when working our way down the group 2 metals. This is compared to non-metals when the...

SK
Answered by Silvia K. Chemistry tutor
30875 Views

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