# Pharmaceutical Orientation: Altering Product Strength & Use of Stock Solutions

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## 11 Questions

water

water

water

preparation

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### The percentage or ratio strength (concentration) of a component in a pharmaceutical preparation is based on its quantity relative to the total quantity of the preparation. If the quantity of the component remains constant, any change in the total quantity of the preparation, through dilution or concentration, changes the concentration of the component in the preparation inversely. An equation useful in these calculations is: (1st quantity) × (1st concentration) = (2nd quantity) × (2nd concentration). The concentration/quantity relationship is based on the principle of ________.

inverse proportion

lesser

determined

dilution

dilution

### An equation useful in these calculations is: (1st quantity) × (1st ______) = (2nd quantity) × (2nd ______) 2 Problems in this section generally may be solved by any of the following methods: 1. Inverse proportion. 2. The equation: (1st quantity)(1st ______)=(2nd quantity)(2nd ______), or Q1 C1 = Q2 C2. 3.

concentration

This quiz covers the concentration-quantity relationship in pharmaceutical preparations, focusing on altering product strength and the use of stock solutions. It includes concepts related to percentage or ratio strength of components and their relative quantities in pharmaceutical preparations.

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