Question

35. 1 g mixture of Caco, and NaCl reacts completely N with 100 ml of HCI. The % of Caco, in the 10 mixture is (2) 60% (1) 40% (3) 50% (4) 80%​

Answer 1

Answer:

done

Explanation:

take mass of caco3=x g and mass of nacl=(1-x) g

solve using equivalent concept

do (no. of eq. of caco3 used+no. of eq. of nacl used=no.of eq. of hcl used)

and no. of eq. =normality*volume taken

so, no. of eq. of hcl=0.1 eq.

and equivalent weight of caco3=(mol.wt of caco3/n-factor of caco3) =100/2=50

and by the same way eq. wt of hcl=36.5

(x/50) + ((1-x)/36.5) = 0.1

solve for x

then do (x/100)*100 to find the answer

Done.