80g of sodium hydroxide reacts with excess sulfuric acid to produce 142g of sodium sulfate. What mass of sodium hydroxide would be needed in order to make 50g of sodium sulfate?

If 80 g of sodium hydroxide reacts with sulfuric acid to produce 142 g of sodium sulfate, the mass of sodium hydroxide that would be needed to make 50 g of sodium sulfate would be 28.17 g

80 g sodium hydroxide produced 142 g sodium sulfate

The mass (in g) of sodium hydroxide that would produce 50 g of sodium sulfate can be calculated as:

        80 x 50/142

                = 28.17 g

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Mass of sodium hydroxide needed  = 28.2 g

Explanation:

Given data:

Mass of sodium hydroxide = 80 g

Mass of sodium sulfate produced = 142 g

Mass of sodium hydroxide needed = ?

Mass of sodium sulfate produced = 50 g

Solution:

Mass of sodium sulfate produced / Mass of sodium hydroxide = Mass of sodium sulfate produced / x

142 g/ 80 g = 50 g / x

x = 50 g × 80 g / 142 g

x =4000 g/ 142

x = 28.2 g