Excessive levels of which nutrient in grapes are linked to high pH?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Prepare for the WSET Diploma D1 Exam with comprehensive practice quizzes. Enhance your understanding with detailed questions and in-depth explanations. Boost your confidence and ensure exam success. Start practicing today!

Multiple Choice

Excessive levels of which nutrient in grapes are linked to high pH?

Explanation:
Potassium is the nutrient linked to higher pH in grape must. When potassium levels are high, potassium ions pair with organic acids like tartaric acid to form potassium salts (such as potassium bitartrate). This binds up free acidity, reducing the concentration of available protons and shifting the acid–base balance toward a higher pH. In other words, excess potassium buffers the acidity, making the must less acidic and raising its pH. Other nutrients don’t have as direct an effect on pH as potassium does.

Potassium is the nutrient linked to higher pH in grape must. When potassium levels are high, potassium ions pair with organic acids like tartaric acid to form potassium salts (such as potassium bitartrate). This binds up free acidity, reducing the concentration of available protons and shifting the acid–base balance toward a higher pH. In other words, excess potassium buffers the acidity, making the must less acidic and raising its pH. Other nutrients don’t have as direct an effect on pH as potassium does.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy