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# gcse science question - easy i think watch

1. http://www.aqa.org.uk/qual/gcse/qp-m...W-QP-Mar04.pdf

What are the answers to 10.1, 10.2, 10.3 and 10.4 of the last question on the higher tier?

Can someone explain why, thankyou.

popcorn.
2. 10.1 = D , 10.2 = A 10.3 =A 10.4 = D
unless anyone cares to disgree.
3. I got D,D,A,D.

The reason why I say D is because the reaction to form Ammonium Nitrate is a neutralisation reaction...

NH3 + HNO3 --> NH4NO3,

which turns Ammonia into Ammonium Nitrate!
4. D - because an acid dissociates to form a Hydrogen ion which is positive and an alkali dissociates to form a hydroxide which is negative, so that forms the water

D - acid + base --> salt + water, so you need to work out what you can have a base with etc and an acid

A - you need a hydroxide for the alkali and sodium is a metal

D - the sulphate comes from the sulphuric acid
5. (Original post by henryt)
I got D,D,A,D.

The reason why I say D is because the reaction to form Ammonium Nitrate is a neutralisation reaction...

NH3 + HNO3 --> NH4NO3,

which turns Ammonia into Ammonium Nitrate!

But i was thinking that this reaction is not in the form:

H+ (aq) + OH- (aq) --> H2 O(l)

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