chanllenging mcqs

[mrpaudel]

actually these are not difficult questions..!!

 

[ideggkr]

hey can any one plz tell that the abv mcq is from which paper???

Took me quite long to make this up..

Really hope it helps..

 

[intel1993]

ohhh thnks .....................shitt.......
i forget to do square the (0.4/2) in denominator........................
bt thnxks....bt can u help to ell me hat that from which paper this quetion belongs.....

 

[utsav156]

hey ppl i heard that its damn tough to manage tym in mcqs is it true???

 

[DeathDealer]

http://www.xtremepapers.me/CIE/International A And AS Level/9701 - Chemistry/9701_w10_qp_12.pdf

Ques 9
cn Some1 Plzzzzzzzzzzz Let meh no about dis....!
XPLAIN !

 

[Xenon]

http://www.xtremepapers.me/CIE/International A And AS Level/9701 - Chemistry/9701_w10_qp_12.pdf

Ques 9
cn Some1 Plzzzzzzzzzzz Let meh no about dis....!
XPLAIN !

Use the idea of Brønsted–Lowry acid–base theory:
acid>> donates proton (H+), base>> accepts protion
Since HNO3 is accepting proton it is acting as a base while H2SO4 provided the proton and so is acting as the acid. H2NO3+ which forms after HNO3 accepting proton acts as the conjugated acid while HSO4- acts as the conjugated base. Thus ans C

Brønsted–Lowry concept can be defined by the reaction:
acid + base <==> conjugate base + conjugate acid.