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human taste buds

what are the four basic flavors detected by the human tongue?

Humans have receptors for glutamic acid as well as the four accepted tastes. These receptors can detect flavorful tastes that are neither sweet, salty, sour, nor bitter. Today, it is accepted that the human tongue can taste five, not four, flavors. The fifth flavor was officially given the same name that Ikeda had used. People usually refer to umami as “savory.”

Explanation:

answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 :

equation 2 :

equation 3 :

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 :

let us add equation 1 & 4

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol