Sucrose is dextrorotatory but the mixture obtained after hydrolysis is laevorotatory. Explain.

Explanation

Sucrose is dextrorotatory. On hydrolysis, it produces a mixture of glucose and fructose having specific rotation `+52.5^(@)` and `-92.4^(@)`. Thus, the respectively net resultant mixture become laevorotatory. Hence, the mixture is laevorotatory and product is known as invert sugar.