Q2 of 43 Page 188

Mention the effect of litmus paper on aqueous solution of ammonia.

The effect of litmus paper on aqueous solution of ammonia:

i. Dry ammonia gas does not show any effect on litmus paper.


ii. But aqueous solution turns red litmus paper into blue.


iii. This indicates that aqueous solution of ammonia shows basic nature.


More from this chapter

All 43 →
2

What is meant by allotropy and allotropes?

 2

Write two allotropes of sulphur.

 2

Mention the formulas of the products, name and physical state of the following reactions:

i. P4(s) + 502(g) ........................


ii. SO2(g) + H2O(l) ........................


iii. P4(s) + 6Cl2(g) ........................


iv. O2(g) + 2H2(g) ........................


v. Mg(s) + H2O(g) ........................


vi. 3Fe(s) + 4H2O(g) ......................


vii. CO (g) + H2O(g) .......................


viii. 3NO2 (g) +H2O(l) .......................


ix. S(s) +6HNO3(aq) .......................


x. SO3(g) + H2SO4(aq) .......................


xi C12H22O11(s)+ Con H2SO4(l) ..............


xii CaCO3(s) + dil H2SO4(aq) ..............

 2

Mention the missing information in In the following chemical reactions:

(i) + H2O(l) H2SO4(aq)


(ii). S(s) + SO2(g)


(iii). + H2O(l) H2CO3(aq)


(iv). S(s) + H2(g)


(v). 2Na(s) + 2NaOH(aq) + H2(g)


(vi). Zn(s) + H2O(g) → ZnO(s) +


(vii). CH4(g) + H2O(g) CO(g) + 3H2(g)


(viii). CuO(s) + Cu(s) + H2O(g)


(ix). H2(g) + 2KH(s)


(x). MgSO4(aq) + Mg(OH)2(s) + (NH4)2SO4(aq)


(xi). SO2(g) + 2H2S(g) 3S(s) + 2H2O(g)


(xii). 2SO2(g) 2SO3(g)


(xiii). CuSO45H2O(s) + con. H2SO4(l)