How many equivalents are there in 425 grams of calcium hydroxide?

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How many equivalents are there in 425 grams of calcium hydroxide?

Is there a formula for this?

2007-02-05 05:41:33 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

2 answers

Molecular weight of Ca(OH)2 is 74. Let Ca(OH)2 be called C.

425gC x 1molC/74gC x 2eqC/1molC = 11.5 eq (three significant figures).

The 1 mol = 2 equivalents come from the need for 2moles of an acid like HCl to neutralize one mole of Ca(OH)2.

2007-02-05 05:48:49 · answer #1 · answered by steve_geo1 7 · 1⤊ 0⤋

Equivalent whats? The molecular weight of Ca(OH)2 is 74, so 74 grams of the stuff contains 40 grams of calcium, and 34 grams of hydroxide, which on a molar basis is of course two moles of hydroxide per mole of calcium.

2007-02-05 13:48:08 · answer #2 · answered by Anonymous · 0⤊ 0⤋