Question

How much malt sugar (C12H22O11) would you need to make a 4-M solution in water?

Answer 1

Answer:

1368 grams

Explanation:

Molar Mass of malt sugar (C12H22O11) = 342 g

Molarity=  342 g/ mol

so 1 molar solution contain =   342 g /Liter

4 Molar solution  contain=  1368g / Liter

Answer 2

Answer:

1368 grams.

Explanation:

Molarity is defined as number of moles of solute present in one litre of solution. 1-M means 1 mole of solute is present in 1 litre of solution.

4-M solution means 4 moles of solute is present in 1 litre of solution.

Molar mass of $C_{12}H_{22} O_{11}$ = $12 \times 12 + 22 \times 1 + 11 \times 16 = 342$ grams.

as molar mass of carbon,hydrogen and oxygen atoms are 12,1 and 16 grams respectively.

Since molar mass of $C_{12} H_{22} O_{11}$ is 342 grams,

1 mole of it weighs 342 grams and 4 moles of it weighs $4 \times 342 = 1368$ grams.

Hence we need 1368 grams to make a 4-M solution of $C_{12}H_{22} O_{11}$.