Table 1 lists the Ksp values of the various calcium phosphate com- The acetic acid in vinegar makes calcium water-soluble. When you notice mineral deposits on your dishes or rings of hard-to-remove soap scum in your shower or bathtub, it usually means that the water supplied to your house is hard water. After cooling, a fatty acid layer is separated as supernatant. Reverse osmosis is a process that removes calcium and other minerals from hard water. 0 0. Source(s): write equation dissociation calcium bromide water: https://shortly.im/tGiqB. Make sure to do this to avoid water spills if you need to cut into ay pipes to install the water softener. 4 years ago. Thanks to all authors for creating a page that has been read 20,512 times. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/b\/b7\/Remove-Calcium-from-Water-Step-1.jpg\/v4-460px-Remove-Calcium-from-Water-Step-1.jpg","bigUrl":"\/images\/thumb\/b\/b7\/Remove-Calcium-from-Water-Step-1.jpg\/aid10544579-v4-728px-Remove-Calcium-from-Water-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"