question 31 :p

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question 31 :p

Post by adriana naziha on Thu Sep 02, 2010 8:43 am

y is it da answer is D?
as in da question is already states 'zinc granules'..
isn't it due 2 da size of da reactant(size of zinc granules)? Question
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Re: question 31 :p

Post by Nur Syazwani on Thu Sep 02, 2010 8:45 am

ad,,i also thought that it is due to the size of reactant Sad

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Re: question 31 :p

Post by nadiah azli on Thu Sep 02, 2010 8:46 am

yeah. quite confusing Suspect

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Re: question 31 :p

Post by NUR ATIQQAH SALLEHUDDIN on Thu Sep 02, 2010 8:47 am

yup! me too.
i taught de answer is C-size of zinc granules..
oMG im so confiuss Exclamation Exclamation
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Re: question 31 :p

Post by auni on Thu Sep 02, 2010 8:51 am

gosshhhh..!confuses la 4 this question..need help...? Crying or Very sad
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Guide for Q31

Post by Admin on Fri Sep 03, 2010 9:01 am

Please look at the question again,

The equation represents the reaction between zinc granules and dilute sulphuric acid.


H
2SO4 + Zn→ ZnSO4 + H2

An increase in which factor will cause the production of hydrogen gas to be faster?



A
[size=12]
Pressure

Tekanan

B

Volume of acid

Isipadu asid

C

Size of zinc granules

Saiz granul zink

D

Temperature of the mixture

Suhu campuran


[/size]
Increase in size of zinc refer bigger size of zinc

Does bigger size of zinc will produce gas faster?

Think....

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Re: question 31 :p

Post by adriana naziha on Fri Sep 03, 2010 5:59 pm

oooo..ok teacher! thanx 4 da explaination..it really help me
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Re: question 31 :p

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