Calculate [OH -] and pH for each of the following solutions.(a) 0.0034 M RbOH[OH-] =_________ M pH = _________(b) 0.0872 g of KOH in 510.0 mL of solution[OH -] =__________ M pH = __________(c) 79.8 mL of 0.00719 M Sr(OH)2 diluted to 900 mL[OH -] = __________ M pH = ____________(d) A solution formed by mixing 64.0 mL of 0.000880 M Sr(OH)2 with 36.0 mL of 2.6 x 10-3 M RbOH[OH -] = ________M pH =__________