Page 293 - Chemistry

= ans. (b) (vi) ( ½ mk)
vii) % of calcium carbonate in the 2g mixture = ans (b) (vi) x 100 ½
2
= ans. (vii) ½
2.

3
Volume of T added (cm ) 0 5 10 15 20 25 30
3
Volume of S + T (cm ) 20 25 30 35 40 45 50
o
Temperature of mixture ( C)

CT 1mk
DP1 1mk
AC 1mk
(b) Graph
Label of axes ½
Scale ½ 29
Plot 1 ½
Shape ½]

28

27

26
Temperature ( o C)

25

0 5 10 15 20 25 30
3
Volume of solution T cm

c) (i) from graph ½

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