State whether the following reactions are exothermic or endothermic:(i

1.	State whether the following reactions are exothermic or endothermic:(i) 3CaO. Al2O3(s) + 6H2O(I) → 3CaO. Al2O3. 6H2O(s) + Heat(ii) 2CaSO4. H2O + 3H2O → 2CaSO4. 2H2O + Heat(iii) KNO3(aq) + H2O(I) + Heat → KNO3(aq)(iv) NaOH(s) + H2O(I) → NaOH(aq) + Heat(v) Transformation of ice into water.(vi) Water turns into ice.(vii) Cooking of food.(viii) Burning candle.
Answer» (i) Exothermic reaction (ii) Exothermic reaction (iii) Endothermic reaction (iv) Exothermic reaction (v) Endothermic reaction (vi) Exothermic reaction (vii) Endothermic reaction (viii) Exothermic reaction

State whether the following reactions are exothermic or endothermic:(i) 3CaO. Al2O3(s) + 6H2O(I) → 3CaO. Al2O3. 6H2O(s) + Heat(ii) 2CaSO4. H2O + 3H2O → 2CaSO4. 2H2O + Heat(iii) KNO3(aq) + H2O(I) + Heat → KNO3(aq)(iv) NaOH(s) + H2O(I) → NaOH(aq) + Heat(v) Transformation of ice into water.(vi) Water turns into ice.(vii) Cooking of food.(viii) Burning candle.

Answer»

(i) Exothermic reaction

(ii) Exothermic reaction

(iii) Endothermic reaction

(iv) Exothermic reaction

(v) Endothermic reaction

(vi) Exothermic reaction

(vii) Endothermic reaction

(viii) Exothermic reaction